GlobeNewswire Inc | Feb 5, 2021 01:30AM EST

February 05, 2021

Q4 2020 sales growth(2) of 4.2% and business EPS growth of 9.8% at CER

-- Specialty Care sales grew 18.3%, driven by strong Dupixent performance (+54.2% to 982 million). -- Vaccines up 14.6%, driven by record demand for differentiated influenza vaccines and continued growth of PPH. -- General Medicines declined 7.5%, reflecting lower U.S. Diabetes sales, COVID environment and portfolio streamlining. -- CHC down 3.0% due to decreased sales of Cough & Cold related portfolio in Europe partially offset by Digestive Health brands. -- Leveraged business EPS as the result of prioritization within R&D and continued execution on smart spending initiatives. -- Sales down 2.4% and business EPS flat on a reported basis, as a result of the overall adverse impact from foreign currency rates.

Full-year 2020 performance

-- Sales increased 3.3% to 36,041 million, driven by Dupixent (3,534 million, up 73,9%) and Vaccines. -- Business EPS of 5.86, up 3.9% on a reported basis and 9.2% at CER ahead of the guidance of 7% to 8%. -- In 2020, cost savings of 1,680 million were realized of which approximately 60% were reinvested . -- IFRS EPS of 9.82 (up 338.4%), reflecting capital gain from sales of Regeneron. -- Entering the sustainable finance landscape with two revolving credit facilities linked to selected sustainability KPIs. -- Board meeting held on February 4, proposes annual dividend of 3.20.

2021 financial outlook

-- Sanofi expects 2021 business EPS(1) to grow high single digit(3) at CER, barring unforeseen major adverse events. Applying average January 2021 exchange rates, the currency impact on 2021 business EPS is estimated to be between -4.5% to -5.5%.

Sanofi Chief Executive Officer, Paul Hudson, commented:

While last year was an extraordinarily challenging year for all, I am incredibly proud of the measurable progress we made within the backdrop of a global pandemic. Our teams across the world have relentlessly delivered on our strategy with a sharpened focus on operating and financial efficiencies. We bolstered our R&D pipeline with the completion of the Synthorx and Principia acquisitions, met several regulatory milestones to bring our important medicines to patients, and have seen several proofs of concept which reassure us about the priorities we chose. We continue to work in parallel on our two COVID-19 vaccine candidates, with clinical trials starting in the coming weeks. At the same time we want to make a more immediate contribution to help saving lives, which is why we have decided to provide manufacturing support to BioNTech and Pfizer. The continuous uptake and potential of Dupixent for patients, our contribution to population health with Vaccines, reinforced with the resiliency of our General Medicines and Consumer Healthcare portfolios are all solid foundations to build upon in 2021, helping us achieve our ambition of bringing breakthrough medicines and vaccines to people around the world.

Q4 2020 Change Change 2020 Change Change at CER at CERIFRS net sales reported ?9,382m (2.4%) +4.2% ?36,041m (0.2%) +3.3%IFRS net income reported ?1,081m N/A ? ?12,314m +338.8%^(^5) ?IFRS EPS reported ?0.86 N/A ? ?9.82 +338.4% ?Free cash flow^(^4) ?1,530m (27.5%) ? ?6,982m +16.1% ?Business operating income ?2,052m +0.3% +9.9% ?9,762m +4.4% +9.7%Business net income^(^1) ?1,527m (0.5%) +9.4% ?7,347m +4.2% +9.6%Business EPS^(^1) ?1.22 0.0% +9.8% ?5.86 +3.9% +9.2%

(1) In order to facilitate an understanding of operational performance, Sanofi comments on the business net income statement. Business net income is a non-GAAP financial measure (definition in Appendix 9). The consolidated income statement for Q4 2020 is provided in Appendix 3 and a reconciliation of reported IFRS net income to business net income is set forth in Appendix 4; (2) Changes in net sales are expressed at constant exchange rates (CER) unless otherwise indicated (definition in Appendix 9); (3) 2020 restated business EPS was 5.86; (4) Free cash flow is a non-GAAP financial measure (definition in Appendix 9); (5) includes capital gain from sales of Regeneron shares.

2020 fourth-quarter and full-year Sanofi sales

-------------------Unless otherwise indicated, all percentage changes in sales in this press release are stated at CER1

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In the fourth quarter of 2020, Sanofi sales were 9,382 million, down 2.4% on a reported basis. Exchange rate movements had a negative effect of 6.6 percentage points, mainly driven by the decrease of the U.S. dollar, Brazilian real, Turkish lira, Russian ruble, Mexican and Argentine pesos. At CER, Sanofi sales increased 4.2%.

Full-year 2020, Sanofi sales reached 36,041 million, down 0.2% on a reported basis. Exchange rate movements had a negative effect of 3.5 percentage points. At CER, Sanofi sales were up 3.3%.

Global Business Units

2020 fourth-quarter and full-year business operating income

Fourth-quarter business operating income (BOI) increased 0.3% to 2,052 million. At CER, BOI increased 9.9%. The ratio of BOI to net sales increased 0.6 percentage points to 21.9% versus the prior year. Full-year 2020, BOI increased 4.4% to 9,762 million. At CER, BOI increased 9.7%. The ratio of business operating income to net sales increased 1.2 percentage points to 27.1%.

1See Appendix 9 for definitions of financial indicators.

PharmaceuticalsFourth-quarter 2020 Pharmaceutical sales increased 2.4% to 6,293 million, with double-digit growth of the Specialty Care portfolio mainly driven by the strong performance of Dupixent which largely offset lower sales in General Medicines partially due to pricing pressures on the Diabetes franchise in the U.S. In 2020, Pharmaceuticals sales increased 3.1% to 25,674 million driven by the strong performance of Specialty Care.

Specialty Care

Dupixent

Net sales (? million) Q4 2020 Change 2020 Change at CER at CERTotal Dupixent^ 982 +54.2 % 3,534 +73.9 %

In the fourth quarter, Dupixent (collaboration with Regeneron) sales were strong despite the COVID-19 environment and increased 54.2% to 982 million. In the U.S., Dupixent sales of 773 million (up 52.7%) were driven by continued strong demand in atopic dermatitis (AD) in adult and adolescent patients, rapid adoption in children aged 6 to 11 years (approved in May 2020), continued uptake in asthma and chronic rhinosinusitis with nasal polyposis (CRSwNP). Dupixent total prescriptions (TRx) increased 65% (year-over-year) and new-to-brand prescriptions (NBRx) grew 18% despite fewer in-person physician visits which remain below the pre-COVID level. In Europe, fourth-quarter Dupixent sales grew 76.9% to 115 million reflecting continued growth in AD in key countries and additional launches in asthma in European markets. In Japan, sales were 58 million (up 30.4%), where strong demand was moderated by the government price decrease implemented in April 2020. Dupixent was approved in China for the treatment of adults with moderate-to-severe AD in June and will be listed on the NRDL (National Reimbursement Drug List) as of March 2021. In 2020, Dupixent sales reached 3,534 million, up 73.9% reflecting increased penetration into eligible AD and asthma populations as well as expansion in additional geographies and new indications in younger populations. At the end of 2020, Dupixent was launched in 47 countries with approximately 230 000 patients on therapy.

Multiple Sclerosis/Neurology/Other Inflammation & Immunology

Net sales (? million) Q4 2020 Change 2020 Change at CER at CERAubagio^ 472 +3.7 % 2,045 +10.6 %Lemtrada^ 21 -60.3 % 113 -58.7 %Kevzara^ 60 +16.7 % 236 +30.3 %Total Multiple Sclerosis/ Neurology/Other I& 553 -1.3 % 2,394 +3.9 %I

In the fourth-quarter and full-year Multiple Sclerosis/Neurology/Other I&I sales were down 1.3% (to 553 million) impacted by the Lemtrada sales decline. In 2020, the franchises sales were up 3.9% driven by Aubagio and Kevzara sales growth.

Aubagio sales increased 3.7% in the fourth quarter to 472 million, driven by Europe (up 16.0%), mainly benefiting from demand growth and an earlier price increase in Germany. In the U.S., Aubagio sales were stable reflecting lower new patient starts related to increased competition. Full-year 2020 Aubagio sales increased 10.6% mainly driven by demand and price increases in the U.S and Germany.

Fourth-quarter and full-year Lemtrada sales decreased 60.3% (to 21 million) and 58.7%, respectively, primarily due to the COVID-19 pandemic, which has led to a decrease in infused immune reconstitution therapies such as Lemtrada.

Fourth-quarter and full-year Kevzara (collaboration with Regeneron) sales were up 16.7% (to 60 million) and 30.3%, respectively, reflecting growth in Europe and Rest of the World.

Rare Disease

Net sales (? million) Q4 2020 Change 2020 Change at CER at CERMyozyme^ / Lumizyme^ 235 +3.8 % 948 +6.0 %Fabrazyme^ 200 -0.9 % 817 +3.2 %Cerezyme^ 160 +0.6 % 690 +4.5 %Aldurazyme^ 57 +13.0 % 234 +8.5 %Cerdelga^ 59 +12.7 % 234 +16.0 %Others Rare Disease 23 +4.3% 88 +4.7%Total Rare Disease 734 +3.0 % 3,011 +5.7 %

In the fourth quarter, Rare Disease sales increased 3.0% to 734 million, primarily driven by demand partially offset by sales phasing. In 2020, Rare Disease sales increased 5.7% driven by Rest of the World.

Fourth-quarter Cerezyme sales increased 0.6% to 160 million, driven by strong growth in Rest of the World. Fourth-quarter Cerdelga sales increased 12.7% to 59 million driven by patient accruals in Europe. Sales of the Gaucher franchise (Cerezyme + Cerdelga) increased 3.4% (to 219 million) in the fourth quarter and 7.1% in 2020.

Fourth-quarter Myozyme/Lumizyme sales increased 3.8% to 235 million supported by new patient accruals in the U.S. In Rest of the World, sales decrease reflected COVID-19 impact on demand. Full-year 2020 Myozyme/Lumizyme sales increased 6.0% driven by new patient accruals in the U.S. and Rest of the World.

Fourth-quarter Fabrazyme sales decreased 0.9% to 200 million reflecting lower sales in the Rest of the World, due to unfavorable order phasing. Fabrazyme was launched in China in May and is the first treatment for Fabry disease approved in China. Full-year 2020 Fabrazyme sales were up 3.2%, reflecting new patient accruals in Europe partially offset by COVID-19 impact and lower sales in Japan due to government price decrease in April 2020.

Oncology

Net sales (? million) Q4 2020 Change 2020 Change at CER at CERJevtana^ 131 +7.0 % 536 +12.2 %Fasturtec^ 38 +2.6 % 152 +12.3 %Libtayo^ 19 +66.7 % 67 ? Sarclisa^ 25 ? 43 ? Total Oncology 213 +24.6 % 798 +27.1 %

Fourth-quarter Oncology sales increased 24.6% to 213 million, driven by Sarclisa and Libtayo launches and growth from established franchises. In 2020, Oncology sales were up 27.1% supported by growth in all three regions.

Fourth-quarter and full-year Jevtana sales increased 7.0% to 131 million and 12.2%, respectively and benefited from increased demand in metastatic castration-resistant prostate cancer following publication of the results of the CARD study in this disease setting at ESMO (European Society for Medical Oncology) and in the NEJM (New England Journal of Medicine) in September 2019. In the U.S., the Jevtana composition of matter patent will expire in September 2021. From May to July 2020, Sanofi filed patent infringement suits against all generic filers on Jevtana under Hatch-Waxman in the U.S. District Court for the District of Delaware asserting two method of use patents (US 10,583,110 and US 10, 716,777), both of which lasts until October 2030. Sanofi has reached settlement agreements with some of the defendants and the suit against the remaining defendants are ongoing. In Europe, generic competition is expected from end of March 2021.

Libtayo (collaboration with Regeneron) approved for the treatment of patients with metastatic cutaneous squamous cell carcinoma (CSCC) or locally advanced CSCC who are not candidates for curative surgery or curative radiation had ex-U.S. sales of 19 million in the fourth quarter and 67 million in 2020. Sales were driven by new country launches. To date, Libtayo has been launched in 18 countries outside the U.S. Libtayo sales in the U.S. are reported by Regeneron.

Sarclisa was approved in March in the U.S. for the treatment of adults with relapsed refractory multiple myeloma (RRMM) who have received at least two prior therapies including lenalidomide and a proteasome inhibitor and in June by the European Commission in certain adults with RRMM. Fourth-quarter Sarclisa sales were 25 million of which 12 million was generated in the U.S. Sarclisa is now launched in 12 countries (including the U.S., Japan, UK, Netherlands, Canada, Sweden, Switzerland and France).

Rare Blood Disorder

Net sales (? million) Q4 2020 Change 2020 Change at CER at CEREloctate^ 156 -6.8 % 638 -5.7 %Alprolix^ 131 +27.8 % 466 +15.0 %Cablivi^ 30 +93.8 % 113 +105.4 %Total Rare Blood Disorder 317 +11.0 % 1,217 +7.1 %

In the fourth quarter and full-year Rare Blood Disorder franchise sales were up 11.0% (317 million) and up 7.1%, respectively, driven by Alprolix and Cablivi performance which more than offset Eloctate sales decline in the U.S. Excluding industrial sales of Alprolix and Eloctate to Sobi, fourth quarter and full-year Rare Blood Disorder sales grew 2.6% and 2.2%, respectively. Industrial sales to Sobi were higher than usual in the fourth quarter and full-year 2020 due to a change in the supply agreement (in 2020, sales to Sobi represented 17% and 11% of Alprolix and Eloctate sales, respectively). Alprolix and Eloctate industrial sales to Sobi are expected to be significantly lower in 2021.

Eloctate sales were 156 million in the fourth quarter, down 6.8% due to lower U.S. sales (-10.6%) as a result of ongoing competitive pressure. Full-year Eloctate sales decreased 5.7% driven by competitive pressure in the U.S partially offset by the Rest of the World (up 15.6%) which includes industrial sales to Sobi. Excluding industrial sales to Sobi, Eloctate fourth quarter and full-year sales decreased 8.9% and 9.8%, respectively.

Fourth-quarter and full-year Alprolix sales were up 27.8% (131 million) and up 15.0%, mainly driven by patient switches from short-acting factors, prophylaxis conversion and increased industrial sales to Sobi. Full-year Alprolix sales were up 15.0%. Excluding industrial sales to Sobi, Alprolix fourth quarter and full-year sales each increased 6.3% and 7.4%, respectively.

Cablivi for the treatment of adults with acquired thrombotic thrombocytopenic purpura (aTTP) generated sales of 30 million in the fourth quarter of which 18 million from the U.S. In Europe, where the product is commercially available in several countries and has a temporary license to be sold in France, sales were 12 million. Full-year 2020 Cablivi sales were 113 million of which 72 million from the U.S. In July, the International Society on Thrombosis and Haemostasis (ISTH) published the first evidence based global guidelines on the diagnosis and treatment of thrombotic thrombocytopenic purpura (TTP) in the Journal of Thrombosis and Haemostasis. The ISTH guidelines suggest treatment with Cablivi in combination with plasma exchange and immunosuppressive therapy for first episode or relapse in all adult aTTP patients. In addition, real world evidence from three published manuscripts from over 230 patients with confirmed aTTP in France, the United Kingdom and Germany continues to demonstrate the benefits of using Cablivi in combination with plasma exchange and immunosuppresive therapy. This growing body of data confirms HERCULES Phase 3 results and continues to support frontline use of Cablivi for aTTP treament.

General Medicines

Diabetes

Net sales (? million) Q4 2020 Change 2020 Change at CER at CERLantus^ 587 (13.6 %) 2,661 (8.5 %)Toujeo^ 221 0.0 % 933 8.4 %Total glargine 808 (10.3 %) 3,594 (4.7 %)Apidra^ 80 (1.1 %) 332 1.7 %Admelog^ 46 (10.7 %) 188 (23.2 %)Soliqua^ 46 25.6 % 161 +36.1 %Other diabetes 107 (8.2 %) 434 (11.2 %)Total Diabetes 1,087 (8.4 %) 4,709 (4.8 %)

In the fourth quarter, global Diabetes sales decreased 8.4% to 1,087 million, due to a continued decline in the average U.S. glargine price (Lantus and Toujeo), as well as some impact from the COVID-19 environment, mainly in the Rest of the World. Full-year 2020 franchise sales were down 4.8% mainly due to lower Lantus and Admelog sales in the U.S.and lower Amaryl sales in China partly offset by Toujeo and Suliqua growth.

Lantus sales were 587 million in the fourth quarter, down 13.6%. mainly due to a continued decline in average U.S. price, patients switching to Toujeo and biosimilar glargine competition. In Rest of the World, sales decreased 4.1%, reflecting some COVID-19 impact on the out-of-pocket market as well as an unfavorable phasing effect. Full-year 2020 Lantus sales decreased 8.5%, mainly due to lower sales in the U.S. and to a lesser extent in Europe, despite double-digit growth in China.

Fourth-quarter Toujeo sales were stable at 221 million, as growth in Rest of the World and Europe offset lower sales in the U.S. In the U.S., fourth-quarter Toujeo sales decreased 18.2% due to a continued decline in the average price which more than offset volume growth. Toujeo was launched in China in the fourth quarter. In 2020, Toujeo sales increased 8.4%, driven by strong performance in Rest of the World and Europe.

Fourth-quarter and full-year Amaryl sales decreased 7.6% (68 million) and 15.9%, respectively, due to lower sales in China reflecting the second wave of the VBP program which includes glimepiride (compound name of Amaryl). As previously disclosed, Sanofi opted not to participate in the bidding for Amaryl.

Fourth-quarter Soliqua/Suliqua sales increased 25.6% to 46 million driven by launches in Rest of the World. Full-year 2020 Soliqua sales increased 36.1% supported by strong growth in all three regions.

Cardiovascular and Established Rx Products

Net sales (? million) Q4 2020 Change 2020 Change at CER at CERLovenox^ 356 +13.7 % 1,351 +4.5 %Plavix^ 202 -1.4 % 916 -30.1 %Aprovel^/Avapro^ 115 -9.2 % 554 -15.9 %Thymoglobulin^ 80 -4.5 % 316 -8.2 %Multaq^ 79 -14.1 % 312 -8.4 %Praluent^ 65 -8.0 % 261 +2.3 %Renvela^/Renagel^ 44 -46.4 % 238 -23.2 %Synvisc^ /Synvisc-One^ 40 -45.7 % 192 -35.6 %Mozobil^ 59 +14.5 % 214 +10.6 %Eloxatin^ 52 +26.2 % 198 -0.5 %Taxotere^ 41 -2.3 % 160 -6.3 %Generics 219 -4.8 % 932 -2.9 %Other 1,055 -10.6 % 4,367 -6.3 %Total Cardiovascular and Established Rx 2,407 -7.1 % 10,011 -8.8 %Products

In the fourth quarter, Cardiovascular and Established Rx Products sales decreased 7.1% to 2,407 million, partially due to the COVID environment and divestments as well as lower Renagel/Renvela sales.

Fourth-quarter Lovenox sales increased 13.7% to 356 million, driven by Rest of the World (up 17.6% to 159 million), and Europe (up 9.7% to 189 million) reflecting recent guidelines recommending the use of low molecular weight heparins in hospitalized COVID-19 patients which more than offset biosimilar competition in several European countries. Full-year 2020 Lovenox sales were up 4.5% driven by Rest of the World sales growth which more than offset biosimilar competition in Europe.

Plavix sales were down 1.4% in the fourth quarter to 202 million. In China, fourth-quarter Plavix sales were 64 million, up 18.2%. Full-year 2020 Plavix sales decreased 30.1%, mainly reflecting lower sales in China (down 52.5% to 341 million) due to net price adjustments following the implementation of the VBP program partially offset by strong volume gains.

Fourth-quarter Aprovel/Avapro sales were down 9.2% to 115 million, primarily reflecting lower sales in Europe. In China, fourth-quarter Aprovel/Avapro sales were 37 million, down 7.5%. Full-year 2020 Aprovel/Avapro sales decreased 15.9%, mainly reflecting lower sales in China (down 33.4% to 190 million) due to net price adjustments following the implementation of the VBP program partially offset by strong volume gains.

Full-year 2020 volume growth of Plavix and CoAprovel increased by 78% in China, achieving the more than 60% target.

Fourth-quarter Praluent sales decreased 8.0% to 65 million, due to lower sales in the U.S. which more than offset performance in Europe (up 44.0% to 35 million). Praluent was launched in China in April. Effective April 1, 2020, Sanofi has sole responsibility for Praluent outside the U.S. while Regeneron has sole responsibility for Praluent in the U.S. Both companies have entered into agreements to support manufacturing needs in the near term and Sanofi booked sales of Praluent in 2020 in the U.S. In the first quarter of 2021, Sanofi will book limited Praluent sales in the U.S. Full-year 2020 Praluent sales grew 2.3% driven by Europe. Excluding the United States and Japan, Praluent sales grew 13.3% in 2020.

Pharmaceuticals business operating income

In the fourth quarter, business operating income (BOI) of Pharmaceuticals increased 3.7% to 1,695 million. At CER, BOI increased 12.1%. The ratio of BOI to net sales increased by 1.9 percentage points to 26.9% reflecting lower operating expenses, specially R&D due to prioritization and resources reallocation. Full-year 2020, BOI of Pharmaceuticals increased 8.0% (12.0% at CER) to 8,833 million. The ratio of BOI to net sales increased 2.6 percentage points to 34.4%.

Vaccines

Net sales (? million) Q4 2020 Change 2020 Change at CER at CERInfluenza vaccines(incl. Vaxigrip^, Fluzone HD^, Fluzone^ 1,228 +24.6 % 2,472 +37.9 % & Flublok^)Polio/Pertussis/Hib vaccines(incl. Hexaxim^ / Hexyon^, Pentacel^, 494 +20.3 % 2,106 +12.6 %Pentaxim^ and Imovax^)Meningitis/Pneumo vaccines 125 +7.3 % 559 (15.0 %)(incl. Menactra^)Adult Booster vaccines (incl. Adacel ^) 123 (11.6 %) 467 (14.9 %)Travel and other endemic vaccines 76 (35.8 %) 301 (43.2 %)Other vaccines 14 (46.9 %) 68 (35.5 %)Total Vaccines 2,060 +14.6 % 5,973 +8.8 %

Fourth-quarter Vaccines sales increased 14.6% to 2,060 million reflecting the strong influenza vaccines performance in Europe and in the U.S. and higher PPH and meningitis sales partly offset by lower sales of travel vaccines and adult booster due to the COVID-19 pandemic. Full-year 2020 Vaccines sales grew 8.8% driven by influenza vaccines as well as expansion of pediatric combinations which more than compensate the negative COVID-19 impact on the other vaccine franchises.

Influenza vaccines sales increased by 24.6% in the fourth quarter to 1,228 million, reflecting strong demand in the northern hemisphere. In Europe, sales grew 118.3% to 305 million driven by increased vaccination coverage and the launch of the differentiated portfolio (Efluelda, a quadrivalent Influenza Vaccine-High Dose and Supemtek, a recombinant influenza vaccine). In the U.S. sales increased 10.2% to 729 million benefiting from the increased demand. Full-year 2020, influenza vaccines sales increased 37.9% to 2,472 million with more than 250 million doses shipped.Fourth-quarter Vaccines sales increased 14.6% to 2,060 million reflecting the strong influenza vaccines performance in Europe and in the U.S. and higher PPH and meningitis sales partly offset by lower sales of travel vaccines and adult booster due to the COVID-19 pandemic. Full-year 2020 Vaccines sales grew 8.8% driven by influenza vaccines as well as expansion of pediatric combinations which more than compensate the negative COVID-19 impact on the other vaccine franchises.

In the fourth quarter, Polio/Pertussis/Hib (PPH) vaccines sales increased 20.3% to 494 million driven by Rest of the world (PPH sales were up 30.6%) which benefited from expansion of Hexaxim and favorable phasing of polio vaccine. Full-year 2020, PPH vaccines sales were up 12.6%.

Fourth-quarter Menactra sales were up 7.3% to 125 million, driven mainly by catch up after low immunization in summer due to COVID-19. Full-year 2020 Menactra sales decreased 15.0% to 559 million reflecting the COVID-19 impact.

Adult Booster vaccines sales decreased 11.6% in the fourth quarter to 123 million, primarily reflecting the COVID-19 impact on Adacel in the U.S. and Repevax in Europe. Full-year 2020 Adult Booster vaccines sales decreased 14.9% due to the COVID-19 environment.

Fourth-quarter and full-year 2020 Travel and other endemic vaccines sales decreased 35.8% and 43.2% respectively, due to extensive travel restrictions globally.

Vaccines business operating income

In the fourth quarter, business operating income (BOI) of Vaccines increased 16.2% to 825 million. At CER, BOI increased 25.1%. The ratio of BOI to net sales increased 2.8 percentage points to 40.0% versus the prior year. Full-year 2020, BOI of Vaccines increased 4.4% (up 11.2% at CER) to 2,276 million. The ratio of BOI to net sales was stable at 38.1%.

Consumer Healthcare

Net sales (? million) Q4 2020 Change 2020 Change at CER at CERAllergy Cough & Cold 220 -16.7 % 1,096 -5.3 %of which Allegra^ 80 -3.3 % 413 +0.5%of which Mucosolvan^ 15 -35.7 % 86 -9.1 %of which Xyzal^ 14 +25.0% 70 +39.2 %Pain 299 -2.1 % 1,225 +2.3 %of which Doliprane^ 86 -9.5 % 325 +0.3 %of which Buscopan^ 43 ? % 177 +8.6 %Digestive 221 +8.5 % 858 -8.6 %of which Dulcolax^ 60 +21.2 % 235 +10.5 %of which Enterogermina^ 42 -8.0 % 180 -8.6 %of which Essentiale^ 57 +30.6 % 198 +10.5 %of which Zantac^ ? ns (7) -109.0 %Nutritionals 144 +1.9 % 611 +4.7 %Other 145 -1.9 % 604 +0.5 %of which Gold Bond^ 48 -20.3 % 201 -4.2 %Total Consumer Healthcare 1,029 -3.0 % 4,394 -1.9 %

In the fourth quarter, Consumer Healthcare (CHC) sales decreased 3.0% to 1,029 million primarily reflecting a weak cough and cold season due to social distancing measures and wearing of masks. Sales were also impacted by divestments of non-core products and product suspensions due to changing regulatory requirements. Full-year 2020 CHC sales decreased 1.9% as a result of the voluntary recall of Zantac in October 2019, as well as divestments of non-core products and product suspensions. Excluding the Zantac recall, full-year 2020 CHC sales were stable.

In Europe, fourth-quarter CHC and full-year 2020 CHC sales decreased 9.7% (to 318 million) and 4.3%, respectively, mainly reflecting lower demand for cough and cold products due to social distancing measures and wearing of masks, divestments of non-core products and product suspensions due to changing regulatory requirements.

In theU.S., fourth-quarter CHC sales increased 2.4% to 238 million, reflecting growth in the Allergy (Allegra and Xyzal) and Digestives categories. Full-year 2020 U.S. sales decreased 1.6%, reflecting the impact of the Zantac recall which offset the growth in the Allergy and Nutritionals categories. Excluding the impact of the Zantac recall, full-year 2020 US sales would have increased by 5.7%.

In the Rest of the World, fourth-quarter CHC sales decreased 1.1% to 473 million, while full-year 2020 sales slightly decreased (0.4%), mostly driven by the performance of the Allergy, Cough & Cold category.

CHC business operating income

In the fourth quarter, business operating income (BOI) of CHC decreased 10.2% to 307 million. At CER, BOI increased 1.8%. The ratio of BOI to net sales increased 0.1 percentage point to 29.8% versus the prior year. Full-year 2020, BOI of CHC decreased 14.4% (down 8.1% at CER) to 1,419 million. The ratio of BOI to net sales decreased 3.0 percentage points to 32.3%.

Company sales by geographic region

Sanofi sales (? million) Q4 2020 Change 2020 Change at CER at CERUnited States 3,611 +5.3 % 13,465 +8.2 %Europe 2,534 +6.0 % 9,151 +1.5 %Rest of the World 3,237 +1.7 % 13,425 +0.2 %of which China 492 +9.9 % 2,454 -7.7 %of which Japan 419 -4.8 % 1,735 -9.5 %of which Brazil 207 +10.0% 836 +5.6 %of which Russia 137 +4.8% 641 +6.7 %Total Sanofi sales 9,382 +4.2 % 36,041 +3.3 %

Fourth-quarter sales in the U.S. increased 5.3% to 3,611 million driven by the strong sales performance of Dupixent as well as Vaccines. Full-year 2020 U.S. sales increased 8.2% mainly driven by Dupixent which more than offset lower Diabetes sales.

In Europe sales were up 6.0% in the fourth-quarter to 2,534 million. Dupixent, influenza vaccines, Aubagio and oncology sales growth more than offset lower sales of General Medicines and CHC. Full-year 2020 sales in Europe were up 1.5% reflecting strong sales performance of Dupixent and influenza vaccines which more than offset lower General Medicines and CHC sales.

In the Rest of the World, sales increased 1.7% to 3,237 million in the fourth quarter driven mainly by the performance of Vaccines, Dupixent, Lovenox and Rare Blood Disorders franchise which more than offset lower Established Rx Products sales. Sales in China increased 9.9% to 492 million, driven by CHC and established Rx Products. In Japan, fourth-quarter sales decreased 4.8% to 419 million due to lower sales of Established Rx Products as well as CHC. In the Rest of the World, full-year 2020 sales increased 0.2%, reflecting the impact of the VBP program in China during the first nine months of the year .

R&D update at the end of the fourth quarter 2020

Regulatory update

-- The European Commission (EC) extended the marketing authorization for Dupixent in the European Union (EU) to include children 6 to 11 years of age with severe atopic dermatitis who are candidates for systemic therapy. Dupixent is the only systemic medicine approved in the EU to treat these patients. -- The U.S. Food and Drug Administration (FDA) issued a Complete Response Letter (CRL) regarding the BLA for sutimlimab, an investigational monoclonal antibody for the treatment of hemolysis in adults with cold agglutinin disease. The CRL refers to certain deficiencies identified by the agency during a pre-license inspection of a third-party facility responsible for manufacturing. There were no clinical or safety deficiencies noted in the CRL with respect to the application. Satisfactory resolution of the observations by the third-party manufacturer is required before the BLA can be approved and Sanofi remains in close contact with the FDA and the third-party manufacturer to reach a resolution in a timely manner. -- The EC approved MenQuadfi for active immunization of individuals from the age of 12 months and older against invasive meningococcal disease caused by Neisseria meningitidis serogroups A, C, W and Y, based upon results from a robust and comprehensive international clinical program, including seven pivotal Phase 2 and 3 randomized, active-controlled, multi-center studies. -- The EC granted a marketing authorization for Supemtek, a quadrivalent (four-strain) recombinant influenza vaccine, for the prevention of influenza in adults aged 18 years and older. This is the first and only recombinant influenza vaccine now approved in the European Union. The authorization is based on clinical data demonstrating safety, immunogenicity and efficacy of Supemtek in two Phase 3 randomized controlled trials involving more than 10,000 patients in total. Outside of the EU, Supemtek is also approved in the U.S. under the tradename Flublok Quadrivalent. -- The FDA accepted for priority review the supplemental Biologics License Application (sBLA) for PD-1 inhibitor Libtayo in monotherapy, to treat patients with first line locally advanced or metastatic non-small cell lung cancer (NSCLC) with 50% PD-L1 expression and in patients with second line and advanced Basal Cell Carcinoma BCC. The target action date for the FDA decision is February 28, 2021 (for NSCLC) and March 3, 2021 (for BCC). -- The National Institute for Health and Care Excellence (NICE) issued a Final Appraisal Determination (FAD) recommending Sarclisa for in combination with existing treatment (pomalidomide and dexamethasone) for adults with relapsed/refractory multiple myeloma who have received three prior lines of treatment and at least two prior therapies including lenalidomide and a proteasome inhibitor and have demonstrated disease progression on the last treatment. -- The FDA accepted for priority review the Biologics License Application (BLA) for avalglucosidase alfa for long-term enzyme replacement therapy for the treatment of patients with Pompe disease (acid -glucosidase deficiency). The target action date for the FDA decision is May 18, 2021. -- Aubagio was granted priority review with a PDUFA date of May 2, 2021 for treating pediatric Relapsing Multiple Sclerosis. -- Fitusiran, a potentially transformative siRNA therapy for people with hemophilia A or B, with or without inhibitors was granted Fast Track Designation by the U.S. FDA for all indications. -- The FDA granted Fast Track Designation (FTD) to the oral investigational Brutons tyrosine kinase (BTK) inhibitor, rilzabrutinib, which has the potential to be the first BTK inhibitor for the treatment of immune thrombocytopenia (ITP). Rilzabrutinib received orphan drug designation from the FDA for the treatment of ITP in October 2018. -- The European Medicines Agencys Committee for Medicinal Products for Human Use (CHMP) has adopted a positive opinion for an additional indication for Plavix (clopidogrel) in adult patients with high-risk transient ischemic attack (TIA) or minor ischemic stroke (IS). This new indication includes Plavix used alongside aspirin within 24 hours of an event and continued for 21 days, followed by long-term single anti-platelet therapy. The additional indication is based on the results of two double-blind, randomized, placebo-controlled investigator-initiated Phase 3 trials. -- FDA has designated SAR442257, (CD38/CD28xCD3 tri-specific) as a Fast Track development program for the investigation in patients with multiple myeloma who have received at least 3 prior lines of therapy, and are refractory to a proteasome inhibitor, an immunomodulatory agent and an anti-CD38 monoclonal antibody.

Portfolio update

Phase 3:

-- A Phase 3 trial investigating amcenestrant with palbociclib as first line therapy for patients with ER(+) HER2(-) advanced breast cancer enrolled its first patients. -- Three Phase 3 trials for Dupixent started: Chronic Inducible Cold Urticaria (LIBERTY-CINDU CurIADS), Chronic Sinusitis without Nasal Polyps (CRSsNP) and Allergic Fungal Rhinosinusitis (AFRS). -- Tolebrutinib, a brain penetrant BTK inhibitor, enrolled patients into the Phase 3 study for Primary Progressive and Secondary Progressive Multiple Sclerosis. -- A Phase 3 study for itepekimab in Chronic Obstructive Pulmonary Disease (AERIFY-1) started. -- Patients have now been re-started on fitusiran in the Phase 3 adolescent and adult clinical studies following a voluntary pause in Q4 2020. An amended protocol was adopted in December and will be presented later today at the European Association of Haemophilia and Allied Disorders (EAHAD) congress. These revisions are aimed at further strengthening the benefit-risk profile of fitusiran for patients. -- The Phase 3 trial for rilzabrutinib in adults and adolescents with persistent or chronic Immune Thrompocytopenia (LUNA3) started.

Phase 2

-- Romilkimab, anti-IL4/IL13 bispecific mAb will not be pursued in systemic scleroderma. -- Itepekimab, anti-IL-33, will not be pursued in asthma. -- Isatuximab in combination with cemiplimab for lymphoma was discontinued. -- The venglustat Phase 2 trial in Parkinsons disease with GBA mutations did not meet the primary endpoint (end-January) and the indication was halted. Safety profile continues to be favorable and the development moves forward as planned in other Rare Disease indications.

Phase 1

-- Sanofi and GSK reported interim results of a Phase 1/2 clinical trial to evaluate the safety, reactogenicity (tolerability) and immunogenicity (immune response) of a COVID-19 vaccine candidate. These results demonstrated an insufficient response in older adults and need to refine the concentration of antigen in order to provide high-level immune response across all age groups. The companies plan a Phase 2b study with an improved antigen formulation which with support from BARDA is expected to start this month. -- SAR444245 (THOR707), a non-alpha IL-2, added a cohort in combination with pembrolizumab in solid tumors. -- SAR443820, a RIPK1 inhibitor, being developed for Amyotrophic Lateral Sclerosis (ALS) transitioned to the clinic and started a Phase 1 safety and tolerability study. -- SAR442501, (FGFR3 antibody) being developed for Achondroplasia, transitioned to the clinic and started a Phase 1 safety and tolerability study.

An update of the R&D pipeline at as of December 31, 2020, is available on our website:

https://www.sanofi.com/en/science-and-innovation/research-and-development

Sustainable performance update

Sanofi became the first large biopharmaceutical company to integrate environmental and social features in two sustainability-linked credit facilities. The interest rate is linked to two sustainability key performance indicators (KPIs) and achieving the set sustainability targets leads to a lower interest rate.

The two facilities include a new 4 billion revolving credit facility expiring December 2025, with two extension options of one year each, and an amendment of the 4 billion revolving credit facility expiring in December 2021 with the addition of two extension options of one year each.

The cost of the facilities is linked to the achievement of annual targets for two sustainable KPIs, contribution to Polio eradication and carbon footprint reduction. The innovative character of the transaction lies on Sanofis commitment to invest yearly a fixed contribution to both Sanofis Espoir Foundation and Sanofi Planet Mobilization program to fund social and environmentally responsible projects and maximize its impact on the two objectives. In case Sanofi achieves its yearly sustainability performance targets, Sanofis lending banks will support this contribution through a discount on the margin.

2020 fourth-quarter and full-year financial results2

Business Net Income2

In the fourth quarter of 2020, Sanofi generated net sales of 9,382 million, a decrease of 2.4% and an increase of 4.2% at CER. In 2020, Sanofi sales were 36,041 million, a decrease of 0.2% and an increase of 3.3% at CER.

Fourth-quarter other revenues decreased 13.4% (down 7.1% at CER) to 354 million, reflecting lower VaxServe sales of non-Sanofi products (308 million, down 7.5% at CER). In 2020, other revenues decreased 11.8% (down 9.5% at CER) to 1,328 million, including lower VaxServe sales of non-Sanofi products (1,136 million, down 8.4% at CER).

Fourth-quarter Gross Profit decreased 4.0% to 6,298 million (up 2.5% at CER). The gross margin ratio decreased 1.2 percentage points to 67.1% (67.1% at CER) versus the prior year. This decrease reflected the erosion of the Pharmaceuticals gross margin ratio (from 72.5% to 70.7%). The margin accretion from Specialty Care was more than offset by the lower gross margin ratio from General Medicines, reflecting increased net price adjustments for U.S. Diabetes, and evolution of product mix. Vaccines gross margin ratio improved 0.2 percentage point to 60.5%. CHC gross margin ratio decreased from 65.8% to 64.6%. In 2020, the gross margin ratio decreased 0.9 percentage point to 70.1% (69.9% at CER) versus 2019, reflecting the lower gross margin ratio in Pharmaceuticals.

Research and Development (R&D) expenses decreased 10.1% to 1,516 million in the fourth quarter. At CER, R&D expenses decreased 6.8% reflecting reallocation of resources towards priority assets which did not fully offset significant diabetes development costs in the fourth quarter of 2019. The ratio of R&D to sales decreased 1.3 percentage points to 16.2% compared to the prior year. Full-year 2020 R&D expenses decreased 8.1% to 5,529 million (down 6.8% at CER) reflecting reprioritization of resources not fully offsetting the decline in diabetes development expenses. In 2020, the ratio of R&D to sales decreased 1.4 percentage points to 15.3% compared to 2019.

Fourth-quarter selling general and administrative expenses (SG&A) decreased 5.0% to 2,601 million. At CER, SG&A expenses were up 0.3%, reflecting increased investments in Specialty Care and Vaccines which offset smart spending and operational excellence initiatives. In the fourth quarter, the ratio of SG&A to sales decreased 0.8 percentage point to 27.7% compared to the prior year. Full-year 2020 SG&A expenses decreased 5.0% to 9,390 million (down 2.4% at CER). In 2020, the ratio of SG&A to sales was 1.3 percentage points lower at 26.1% compared to 2019.

Fourth-quarter operating expenses were 4,117 million, a decrease of 6.9% and 2.4% at CER. Full-year 2020 operating expenses were 14,919 million, a decrease of 6.2% and 4.0% at CER.

Fourth-quarter other current operating income net of expenses was -125 million versus -70 million in the prior year. This line included an expense of 289 million (versus a 241 million expense in the fourth quarter of 2019) corresponding to the share of profit to Regeneron of the monoclonal antibodies Alliance, reimbursement of development costs by Regeneron and the reimbursement of commercialization-related expenses incurred by Regeneron. In 2020, other current operating income net of expenses was -562 million versus -382 million in 2019 and included a gain of 157 million related to a revaluation of retained Regeneron shares in the second quarter. The full-year 2020 expense associated with the monoclonal antibodies Alliance with Regeneron was 1,001 million, which compared with an expense of 681 million in 2019 (see appendix 7 for further details).

The share of profit from associates was 4 million in the fourth quarter versus a loss of 13 million in the prior year. Following the sale of its Regeneron stake at the end of May 2020, Sanofi restated its previously reported non-GAAP indicator (Business Net Income) and excluded the effect of equity method of accounting for Regeneron investment in 2019, Q1 2020 and Q2 2020. In 2020, the share of profits from associates was 16 million (versus 9 million in 2019).

Fourth-quarter business operating income2 (BOI) increased 0.3% to 2,052 million. At CER, BOI increased 9.9% reflecting the operational leverage driven by smart spending and operational excellence initiatives as well as R&D prioritization. The ratio of BOI to net sales increased 0.6 percentage points to 21.9% versus the prior year. In 2020, BOI was 9,762 million, up 4.4% (up 9.7% at CER) and included 1,680 million of saving initiatives (including around 230 million of savings related to COVID-19). In 2020, operational excellence and deprioritized businesses generated savings of 564 million and 500 million, respectively while smart spending initiatives realized 616 million. In 2020, the ratio of BOI to net sales increased 1.2 percentage points to 27.1% (27.5% at CER), driven by Pharmaceuticals.

Net financial expenses were 94 million in the fourth quarter versus 73 million in the same period of 2019. Full-year 2020 net financial expenses were 337 million versus 303 million in 2019.

Fourth-quarter and full-year 2020 effective tax rate was stable at 22.0% versus the prior period. Sanofi expects its effective tax rate to be around 21% in 2021, everything being equal in the U.S.

Fourth-quarter business net income2 decreased 0.5% to 1,527 million and increased 9.4% at CER. The ratio of business net income to net sales increased 0.3 percentage points to 16.3% (16.8% at CER) versus the fourth quarter of 2019. In 2020, business net income2 increased 4.2% to 7,347 million and increased 9.6% at CER. The ratio of business net income to net sales increased 0.9 percentage point to 20.4% (20.7% at CER) versus 2019.

In the fourth quarter of 2020, business earnings per share2 (EPS) was stable at 1.22 on a reported basis and increased 9.8% at CER. The average number of shares outstanding was 1,255.1 million versus 1,253.1 million in fourth quarter 2019. Full-year 2020, business earnings per share2 was 5.86, up 3.9% on a reported basis and up 9.2% at CER. The average number of shares outstanding was 1,253.6 million in 2020 versus 1,249.9 million in 2019.

2See Appendix 3 for 2020 fourth-quarter consolidated income statement; see Appendix 9 for definitions of financial indicators, and Appendix 4 for reconciliation of IFRS net income reported to business net income.

Reconciliation of IFRS net income reported to business net income (see Appendix 4)

In 2020, the IFRS net income was 12,314 million. The main items excluded from the business net income were:

-- An amortization charge of 1,681 million related to fair value remeasurement on intangible assets of acquired companies (primarily Genzyme: 549 million, Bioverativ: 331 million, Boehringer Ingelheim CHC business: 202 million, Ablynx: 168 million, Aventis: 104 million) and to acquired intangible assets (licenses/products: 89 million). These items have no cash impact on the Company. -- An impairment of intangible assets of 330 million related to several projects including Diabetes. -- Restructuring costs and similar items of 1,064 million is mainly related to streamlining initiatives in Europe. -- A pre-tax gain of 136 million mainly arising from the divestment of Seprafilm to Baxter. -- A gain of 7,225 million related to the sale of the majority of Sanofis Regeneron shares completed on May 29. -- A 264 million tax effect arising from the items listed above, mainly comprising 541 million of deferred taxes generated by amortization and impairments of intangible assets and 293 million associated with restructuring costs and similar items and -477 million of tax related to the sale of Regeneron shares (see Appendix 4). -- 313 million corresponding to the share of income related to equity accounting from Regeneron until May 29, 2020. Sanofi non-GAAP indicator (Business net income) does not include the share of income related to equity accounting since it ceased to be an associate on May 29, 2020.

Capital Allocation

In 2020, free cash flow3 increased by 16.1% to 6,982 million, after net changes in working capital (-35 million), capital expenditures (-1,329 million) and other asset acquisitions4 (-562 million), proceeds from disposals4 (930 million), and payments related to restructuring and similar items (-910 million). Over the period, acquisitions5 were -5,786 million (-3,029 million related to Principia and -2,245 million related to Synthorx) and proceeds from disposals5 net of tax were 10,370 million (sale of Regeneron shares). As a consequence, net debt decreased from 15,107 million at December 31, 2019, to 8,789 million at December 31, 2020 (amount net of 13,915 million cash and cash equivalents).

--------Financial statements are not audited. The audit procedures by the Statutory Auditors are underway.

--------Forward-Looking Statements

This press release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, as amended. Forward-looking statements are statements that are not historical facts. These statements include projections and estimates and their underlying assumptions, statements regarding plans, objectives, intentions and expectations with respect to future financial results, events, operations, services, product development and potential, and statements regarding future performance. Forward-looking statements are generally identified by the words expects, anticipates, believes, intends, estimates, plans and similar expressions. Although Sanofis management believes that the expectations reflected in such forward-looking statements are reasonable, investors are cautioned that forward-looking information and statements are subject to various risks and uncertainties, many of which are difficult to predict and generally beyond the control of Sanofi, that could cause actual results and developments to differ materially from those expressed in, or implied or projected by, the forward-looking information and statements. These risks and uncertainties include among other things, the uncertainties inherent in research and development, future clinical data and analysis, including post marketing, decisions by regulatory authorities, such as the FDA or the EMA, regarding whether and when to approve any drug, device or biological application that may be filed for any such product candidates as well as their decisions regarding labelling and other matters that could affect the availability or commercial potential of such product candidates, the fact that product candidates if approved may not be commercially successful, the future approval and commercial success of therapeutic alternatives, Sanofis ability to benefit from external growth opportunities, to complete related transactions and/or obtain regulatory clearances, risks associated with intellectual property and any related pending or future litigation and the ultimate outcome of such litigation, trends in exchange rates and prevailing interest rates, volatile economic and market conditions, cost containment initiatives and subsequent changes thereto, and the impact that COVID-19 will have on us, our customers, suppliers, vendors, and other business partners, and the financial condition of any one of them, as well as on our employees and on the global economy as a whole. Any material effect of COVID-19 on any of the foregoing could also adversely impact us. This situation is changing rapidly and additional impacts may arise of which we are not currently aware and may exacerbate other previously identified risks. The risks and uncertainties also include the uncertainties discussed or identified in the public filings with the SEC and the AMF made by Sanofi, including those listed under Risk Factors and Cautionary Statement Regarding Forward-Looking Statements in Sanofis annual report on Form 20-F for the year ended December 31, 2019. Other than as required by applicable law, Sanofi does not undertake any obligation to update or revise any forward-looking information or statements.

3non-GAAP financial measure (definition in Appendix 9).4Not exceeding 500 million per transaction (inclusive of all payments related to the transaction). 5Amount of the transaction above 500 million per transaction (inclusive of all payments related to the transaction).

Appendices

List of appendices

Appendix1: 2020 fourth-quarter and full-year 2020 net sales by GBU, franchise, geographic region and productAppendix 2: 2020 fourth-quarter and full-year 2020 business net income statementAppendix 3: 2020 fourth-quarter and full-year 2020 consolidated income statementAppendix 4: Reconciliation of IFRS net income reported to business net incomeAppendix 5: Change in net debtAppendix 6: Simplified consolidated balance sheetAppendix 7: Other current operating income net of expenses ? Regeneron AlliancesAppendix 8: Currency sensitivityAppendix 9: Definitions of non-GAAP financial indicators

Investor Relations: (+) 33 1 53 77 45 45 - E-mail: IR@sanofi.com- MediaRelations: (+) 33 1 53 77 46 46 - E-mail:MR@sanofi.comWebsite:www.sanofi.com

Appendix 1: 2020 fourth-quarter net sales by GBU, franchise, geographic region and product

Q4 2020 (? Total % United Rest ofmillion) Sales % CER reported States % CER Europe % CER the % CER worldDupixent 982 54.2 % 44.6 % 773 52.7 % 115 76.9 % 94 44.9 %Aubagio 472 3.7 % -2.1 % 318 0.0 % 122 16.0 % 32 3.0 %Lemtrada 21 -60.3 % -63.8 % 11 -61.8 % 5 -62.5 % 5 -50.0 %Kevzara 60 16.7 % 11.1 % 31 -2.9 % 20 42.9 % 9 66.7 %MS/Neurology/ 553 -1.3 % -6.9 % 360 -5.4 % 147 9.6 % 46 2.1 %Other I&ICerezyme 160 0.6 % -9.6 % 44 -4.0 % 62 -6.0 % 54 11.7 %Cerdelga 59 12.7 % 7.3 % 31 6.5 % 24 20.0 % 4 25.0 %Myozyme 235 3.8 % -1.3 % 90 11.4 % 98 2.1 % 47 -5.7 %Fabrazyme 200 -0.9 % -7.0 % 98 0.0 % 51 8.3 % 51 -9.8 %Aldurazyme 57 13.0 % 5.6 % 13 7.7 % 21 0.0 % 23 30.0 %Rare Disease 734 3.0 % -3.7 % 276 3.8 % 256 2.4 % 202 2.7 %Jevtana 131 7.0 % 2.3 % 60 3.3 % 47 17.1 % 24 0.0 %Fasturtec 38 2.6 % -2.6 % 23 -3.8 % 11 10.0 % 4 33.3 %Libtayo 19 66.7 % 58.3 % 0 ? 18 50.0 % 1 0.0 %Sarclisa 25 ? ? 12 ? 7 ? 6 ? Oncology 213 24.6 % 19.0 % 95 14.9 % 83 33.3 % 35 34.5 %Alprolix 131 27.8 % 21.3 % 79 10.4 % 0 ? 52 71.0 %Eloctate 156 -6.8 % -11.9 % 103 -10.6 % 0 ? 53 1.9 %Cablivi 30 93.8 % 87.5 % 18 100.0 % 12 71.4 % 0 ? Rare Blood 317 11.0 % 5.3 % 200 2.4 % 12 71.4 % 105 27.4 %DisorderSpecialty Care 2,799 18.3 % 11.3 % 1,704 19.1 % 613 18.1 % 482 15.8 %Lantus 587 -13.6 % -19.5 % 202 -23.8 % 130 -12.7 % 255 -4.1 %Toujeo 221 0.0 % -5.6 % 58 -18.2 % 96 7.8 % 67 10.4 %Apidra 80 -1.1 % -9.1 % 9 0.0 % 32 -2.9 % 39 0.0 %Soliqua/ 46 25.6 % 17.9 % 29 10.7 % 7 40.0 % 10 83.3 %iGlarLixiDiabetes 1,087 -8.4 % -14.3 % 339 -19.6 % 303 -2.8 % 445 -1.6 %Plavix 202 -1.4 % -4.7 % 3 ? 33 -5.7 % 166 -2.3 %Lovenox 356 13.7 % 6.3 % 8 28.6 % 189 9.7 % 159 17.6 %Renagel / 44 -46.4 % -47.6 % 3 -88.6 % 11 -21.4 % 30 -14.3 %RenvelaAprovel 115 -9.2 % -12.2 % 3 -50.0 % 24 -22.6 % 88 -2.1 %Synvisc / 40 -45.7 % -50.6 % 25 -53.4 % 6 0.0 % 9 -35.3 %Synvysc oneMozobil 59 14.5 % 7.3 % 33 6.1 % 15 15.4 % 11 44.4 %Thymoglobulin 80 -4.5 % -10.1 % 51 1.9 % 7 -30.0 % 22 -8.0 %Taxotere 41 -2.3 % -4.7 % 0 0.0 % ? -100.0 % 41 0.0 %Eloxatine 52 26.2 % 23.8 % 0 -100.0 % 1 0.0 % 51 18.2 %Praluent 65 -8.0 % -13.3 % 24 -30.8 % 35 44.0 % 6 -45.5 %Multaq 79 -14.1 % -20.2 % 69 -14.0 % 6 -45.5 % 4 150.0 %Generics 219 -4.8 % -19.2 % 44 29.7 % 22 -45.2 % 153 -2.6 %Others 1,055 -10.6 % -15.4 % 59 -28.2 % 522 -6.7 % 474 -11.7 %Cardiovascular& Established 2,407 -7.1 % -12.9 % 322 -21.0 % 871 -5.1 % 1,214 -4.1 %Rx ProductsGeneral 3,494 -7.5 % -13.3 % 661 -20.3 % 1,174 -4.5 % 1,659 -3.4 %MedicinesPharmaceuticals 6,293 2.4 % -3.9 % 2,365 4.6 % 1,787 2.2 % 2,141 0.3 %Polio / 494 20.3 % 11.5 % 112 10.0 % 80 2.5 % 302 30.6 %Pertussis / HibAdult Booster 123 -11.6 % -16.3 % 59 -14.9 % 37 -5.1 % 27 -11.8 %VaccinesMeningitis / 125 7.3 % 0.8 % 81 50.9 % 0 -100.0 % 44 -28.8 %PneumoniaInfluenza 1,228 24.6 % 18.2 % 729 10.2 % 305 118.3 % 194 8.3 %VaccinesTravel andOther Endemic 76 -35.8 % -38.2 % 13 -50.0 % 5 -83.3 % 58 -7.7 %VaccinesVaccines 2,060 14.6 % 8.0 % 1,008 7.7 % 429 48.3 % 623 9.8 %Allergy, Cough 220 -16.7 % -22.0 % 66 12.5 % 59 -32.2 % 95 -20.6 %and ColdPain 299 -2.1 % -11.0 % 40 -8.5 % 139 -4.1 % 120 2.1 %Digestive 221 8.5 % -0.9 % 24 23.8 % 76 0.0 % 121 11.4 %Nutritional 144 1.9 % -6.5 % 9 11.1 % 32 0.0 % 103 1.8 %Consumer 1,029 -3.0 % -10.8 % 238 2.4 % 318 -9.7 % 473 -1.1 %HealthcareCompany 9,382 4.2 % -2.4 % 3,611 5.3 % 2,534 6.0 % 3,237 1.7 %

Full-year 2020 net sales by GBU, franchise, geographic region and product

Full Year 2020 Total % CER % United % CER Europe % CER Rest of % CER(? million) Sales reported States the worldDupixent 3,534 73.9 % 70.4 % 2,808 72.1 % 386 89.2 % 340 73.1 %Aubagio 2,045 10.6 % 8.8 % 1,448 9.0 % 473 14.7 % 124 15.8 %Lemtrada 113 -58.7 % -59.8 % 60 -59.6 % 30 -68.4 % 23 -28.6 %Kevzara 236 30.3 % 27.6 % 123 8.7 % 75 70.5 % 38 57.7 %MS/Neurology/ 2,394 3.9 % 2.1 % 1,631 2.5 % 578 4.9 % 185 13.1 %Other I&ICerezyme 690 4.5 % -2.5 % 177 -1.6 % 249 -3.5 % 264 16.6 %Cerdelga 234 16.0 % 13.6 % 128 10.2 % 92 22.7 % 14 30.8 %Myozyme 948 6.0 % 3.3 % 359 10.9 % 389 0.5 % 200 8.5 %Fabrazyme 817 3.2 % 0.5 % 406 1.0 % 200 8.6 % 211 2.8 %Aldurazyme 234 8.5 % 4.5 % 52 3.9 % 80 1.3 % 102 17.0 %Rare Disease 3,011 5.7 % 1.9 % 1,122 4.7 % 1,010 2.7 % 879 10.4 %Jevtana 536 12.2 % 10.7 % 246 17.9 % 187 10.6 % 103 2.9 %Fasturtec 152 12.3 % 10.1 % 96 10.1 % 42 10.5 % 14 36.4 %Libtayo 67 331.3 % 318.8 % 0 ? 61 306.7 % 6 700.0 %Sarclisa 43 ? ? 26 ? 9 ? 8 ? Oncology 798 27.1 % 25.1 % 368 24.6 % 299 34.5 % 131 19.3 %Alprolix 466 15.0 % 13.1 % 320 8.7 % 0 ? 146 32.1 %Eloctate 638 -5.7 % -6.7 % 445 -12.6 % 0 ? 193 15.6 %Cablivi 113 105.4 % 101.8 % 72 117.6 % 41 86.4 % 0 ? Rare Blood 1,217 7.1 % 5.6 % 837 0.1 % 41 86.4 % 339 22.2 %DisorderSpecialty Care 10,954 22.4 % 19.5 % 6,766 24.8 % 2,314 16.7 % 1,874 21.0 %Lantus 2,661 -8.5 % -11.7 % 929 -17.7 % 537 -9.8 % 1,195 0.5 %Toujeo 933 8.4 % 5.7 % 267 -5.9 % 374 9.6 % 292 23.1 %Apidra 332 1.7 % -3.5 % 32 -28.3 % 131 -1.5 % 169 12.8 %Soliqua/ 161 36.1 % 32.0 % 100 17.2 % 24 38.9 % 37 129.4 %iGlarLixiDiabetes 4,709 -4.8 % -7.9 % 1,501 -15.6 % 1,206 -2.4 % 2,002 3.2 %Plavix 916 -30.1 % -31.3 % 10 ? 129 -9.2 % 777 -33.5 %Lovenox 1,351 4.5 % -0.6 % 30 -6.1 % 656 -9.3 % 665 22.0 %Renagel / 238 -23.2 % -24.2 % 64 -51.9 % 46 -16.4 % 128 4.0 %RenvelaAprovel 554 -15.9 % -17.8 % 22 -15.4 % 100 -11.5 % 432 -16.8 %Synvisc / 192 -35.6 % -37.9 % 131 -37.0 % 20 -23.1 % 41 -36.1 %Synvysc oneMozobil 214 10.6 % 8.1 % 123 9.6 % 55 7.8 % 36 18.8 %Thymoglobulin 316 -8.2 % -10.7 % 191 -1.0 % 29 -21.6 % 96 -16.0 %Taxotere 160 -6.3 % -8.0 % 0 -100.0 % 2 -50.0 % 158 -5.8 %Eloxatine 198 -0.5 % -2.5 % 1 -116.7 % 2 0.0 % 195 -3.9 %Praluent 261 2.3 % 1.2 % 106 -4.5 % 121 8.9 % 34 2.9 %Multaq 312 -8.4 % -10.1 % 274 -5.1 % 24 -41.5 % 14 27.3 %Generics 932 -2.9 % -13.2 % 161 8.6 % 100 -27.3 % 671 -0.8 %Others 4,367 -6.3 % -9.5 % 255 -15.3 % 2,015 -3.8 % 2,097 -7.4 %Cardiovascular& Established 10,011 -8.8 % -12.4 % 1,368 -11.4 % 3,299 -6.7 % 5,344 -9.4 %Rx ProductsGeneral 14,720 -7.6 % -11.0 % 2,869 -13.6 % 4,505 -5.6 % 7,346 -6.3 %MedicinesPharmaceuticals 25,674 3.1 % -0.1 % 9,635 10.2 % 6,819 0.9 % 9,220 -1.8 %Polio / 2,106 12.6 % 8.2 % 412 11.3 % 331 6.3 % 1,363 14.6 %Pertussis / HibAdult Booster 467 -14.9 % -17.1 % 247 -20.3 % 150 -10.7 % 70 -1.3 %VaccinesMeningitis / 559 -15.0 % -18.0 % 392 -20.3 % 1 -50.0 % 166 1.2 %PneumoniaInfluenza 2,472 37.9 % 30.7 % 1,575 29.9 % 441 93.9 % 456 30.6 %VaccinesTravel andOther Endemic 301 -43.2 % -44.2 % 73 -48.3 % 47 -64.4 % 181 -29.9 %VaccinesVaccines 5,973 8.8 % 4.2 % 2,759 5.9 % 973 15.4 % 2,241 9.9 %Allergy, Cough 1,096 -5.3 % -7.8 % 361 13.0 % 305 -15.9 % 430 -9.4 %and ColdPain 1,225 2.3 % -4.3 % 181 -0.5 % 539 0.0 % 505 5.4 %Digestive 858 -8.6 % -12.9 % 86 -43.9 % 319 -0.9 % 453 -2.6 %Nutritional 611 4.7 % -1.6 % 43 15.8 % 127 -0.8 % 441 5.3 %Consumer 4,394 -1.9 % -6.4 % 1,071 -1.6 % 1,359 -4.3 % 1,964 -0.4 %HealthcareCompany 36,041 3.3 % -0.2 % 13,465 8.2 % 9,151 1.5 % 13,425 0.2 %

Appendix 2: Business net income statement

Fourth Pharmaceuticals Consumer Healthcare Vaccines Others^(2) Total GroupQuarter 2020 Q4 2019 Q4 Q4 Q4 2019 Q4 Q4 Q4 2019? million Q4 2020 ^(1) Change 2020 2019^ Change Q4 2020 ^(1) Change 2020 2019^ Change Q4 2020 ^(1) Change (1) (1)Net sales 6,293 6,547 -3.9% 1,029 1,153 -10.8% 2,060 1,908 8.0% ? ? ?% 9,382 9,608 -2.4%Other 30 36 -16.7% 16 15 6.7% 308 358 -14.0% ? ? ?% 354 409 -13.4%revenuesCost of (1,872) (1,839) 1.8% (380) (409) -7.1% (1,122) (1,116) 0.5% (64) (93) -31.2% (3,438) (3,457) -0.5%SalesAs % of net (29.7)% (28.1)% (36.9) (35.5) (54.5)% (58.5)% (36.6)% (36.0)% sales % %Gross Profit 4,451 4,744 -6.2% 665 759 -12.4% 1,246 1,150 8.3% (64) (93) -31.2% 6,298 6,560 -4.0%As % of net 70.7% 72.5% 64.6% 65.8% 60.5% 60.3% 67.1% 68.3% salesResearch anddevelopment (1,169) (1,352) -13.5% (42) (45) -6.7% (187) (192) -2.6% (118) (97) 21.6% (1,516) (1,686) -10.1%expensesAs % of net (18.6)% (20.7)% (4.1)% (3.9)% (9.1)% (10.1)% (16.2)% (17.5)% salesSelling andgeneral (1,432) (1,511) -5.2% (353) (410) -13.9% (235) (251) -6.4% (581) (565) 2.8% (2,601) (2,737) -5.0%expensesAs % of net (22.8)% (23.1)% (34.3) (35.6) (11.4)% (13.2)% (27.7)% (28.5)% sales % %Othercurrentoperating (149) (241) 35 53 1 3 (12) 115 (125) (70) income/expensesShare ofprofit/lossofassociates* 2 1 2 (14) ? ? ? ? 4 (13) and jointventures^(3)Net incomeattributableto non (8) (7) ? (1) ? ? ? ? (8) (8) controllinginterestsBusinessoperating 1,695 1,634 3.7% 307 342 -10.2% 825 710 16.2% (775) (640) 21.1% 2,052 2,046 0.3%incomeAs % of net 26.9% 25.0% 29.8% 29.7% 40.0% 37.2% 21.9% 21.3% sales Financial income and expenses (94) (73) Income tax expenses (431) (439) Tax rate** 22.0% 22.0% Business net income 1,527 1,534 -0.5% As % of net sales 16.3% 16.0% Business earnings / share(in euros)*** 1.22 1.22 ?%

* Net of tax.

** Determined based on Business income before tax, associates, and non-controlling interests.

*** Based on an average number of shares outstanding of 1,255.1 million in the fourth quarter of 2020 and 1,253.1 million in the fourth quarter of 2019.

(1) In 2019, change of presentation according to the Company new management reporting basis for 2020 and including the Impact of lease standard IFRS 16, effective January 1, 2019, in order to be reported under IFRS 16 and its related interpretations for comparison purposes.

(2) Other includes the cost of global support functions (Finance, Human Resources, Information Solution & Technologies, Sanofi Business Services, etc.).

(3) The line "Share of profits/loss of associates and joint-ventures " has been restated in 2019 to exclude any effect of equity method accounting for Regeneron investment as a consequence of the sale of the entire equity investment in Regeneron (with the exception of 400,000 shares retained by Sanofi) on May 29th 2020.

Full-year Pharmaceuticals Consumer Healthcare Vaccines Others^(2) Total Group2020? million 2020 2019^ Change 2020 2019^ Change 2020 2019^ Change 2020 2019^ Change 2020 2019^(1) Change (1) (1) (1) (1)Net sales 25,674 25,700 -0.1% 4,394 4,695 -6.4% 5,973 5,731 4.2% ? ? ?% 36,041 36,126 -0.2%Other 128 173 -26.0% 59 57 3.5% 1,141 1,275 -10.5% ? ? ?% 1,328 1,505 -11.8%revenuesCost of (7,025) (6,750) 4.1% (1,506) (1,599) -5.8% (3,328) (3,372) -1.3% (245) (252) -2.8% (12,104) (11,973) 1.1%SalesAs % of net (27.4)% (26.3)% (34.3)% (34.1)% (55.7)% (58.8)% (33.6)% (33.1)% salesGross Profit 18,777 19,123 -1.8% 2,947 3,153 -6.5% 3,786 3,634 4.2% (245) (252) -2.8% 25,265 25,658 -1.5%As % of net 73.1% 74.4% 67.1% 67.2% 63.4% 63.4% 70.1% 71.0% salesResearch anddevelopment (4,331) (4,850) -10.7% (136) (149) -8.7% (692) (639) 8.3% (370) (380) -2.6% (5,529) (6,018) -8.1%expensesAs % of net (16.9)% (18.9)% (3.1)% (3.2)% (11.6)% (11.1)% (15.3)% (16.7)% salesSelling andgeneral (5,097) (5,442) -6.3% (1,450) (1,529) -5.2% (822) (823) -0.1% (2,021) (2,089) -3.3% (9,390) (9,883) -5.0%expensesAs % of net (19.9)% (21.2)% (33.0)% (32.6)% (13.8)% (14.4)% (26.1)% (27.4)% salesOthercurrentoperating (488) (625) 54 193 2 ? (130) 50 (562) (382) income/expensesShare ofprofit/lossofassociates* 5 5 9 (5) 2 9 ? ? 16 9 and jointventures ^(3)Net incomeattributableto non (33) (29) (5) (6) ? ? ? ? (38) (35) controllinginterestsBusinessoperating 8,833 8,182 8.0% 1,419 1,657 -14.4% 2,276 2,181 4.4% (2,766) (2,671) 3.6% 9,762 9,349 4.4%incomeAs % of net 34.4% 31.8% 32.3% 35.3% 38.1% 38.1% 27.1% 25.9% sales Financial income and expenses (337) (303) Income tax expenses (2,078) (1,996) Tax rate** 22.0% 22.0% Business net income 7,347 7,050 4.2% As % of net sales 20.4% 19.5% Business earnings / share(in euros)*** 5.86 5.64 3.9%

* Net of tax.

** Determined based on Business income before tax, associates, and non-controlling interests.

*** Based on an average number of shares outstanding of 1,253,6 million in full year 2020 and 1,249.9 million in full year 2019.

(1) In 2019, change of presentation according to the Company new management reporting basis for 2020 and including the Impact of lease standard IFRS 16, effective January 1, 2019, in order to be reported under IFRS 16 and its related interpretations for comparison purposes.

(2) Other includes the cost of global support functions (Finance, Human Resources, Information Solution & Technologies, Sanofi Business Services, etc.).

(3) The line "Share of profits/loss of associates and joint-ventures " has been restated in 2019 to exclude any effect of equity method accounting for Regeneron investment as a consequence of the sale of the entire equity investment in Regeneron (with the exception of 400,000 shares retained by Sanofi) on May 29th 2020.

Appendix 3: Consolidated income statements

? million Q4 2020 Q4 2019 2020 2019Net sales 9,382 9,608 36,041 36,126 Other revenues 354 409 1,328 1,505 Cost of sales (3,438) (3,457) (12,157) (11,976) Gross profit 6,298 6,560 25,212 25,655 Research and development expenses (1,516) (1,686) (5,529) (6,018) Selling and general expenses (2,601) (2,737) (9,390) (9,883) Other operating income 173 429 696 825 Other operating expenses (298) (499) (1,415) (1,207) Amortization of intangible assets (394) (510) (1,681) (2,146) Impairment of intangible assets ^ (5) (1,581) (330) (3,604) (1)Fair value remeasurement of 48 (4) 124 238 contingent considerationRestructuring costs and similar (196) (158) (1,064) (1,062) itemsOther gains and losses, and ? 67 136 327 litigation ^(2)Gain on Regeneron investment asresult of transaction completed onMay 29th, 2020 ^(3) ? ? 7,382 ?

Operating income 1,509 (119) 14,141 3,125 Financial expenses (101) (91) (390) (444) Financial income 7 18 53 141 Income before tax and associates 1,415 (192) 13,804 2,822 and joint venturesIncome tax expense (329) 142 (1,813) (139) Share of profit/(loss) of 4 48 359 255 associates and joint venturesNet income excluding the exchanged/held-for-exchange Animal Health 1,090 (2) 12,350 2,938 businessNet income/(loss) of the exchanged/held-for-exchange Animal Health ? (1) ? (101) businessNet income 1,090 (3) 12,350 2,837 Net income attributable to 9 7 36 31 non-controlling interestsNet income attributable to equity 1,081 (10) 12,314 2,806 holders of SanofiAverage number of shares 1,255.1 1,253.1 1,253.6 1,249.9 outstanding (million)IFRS Earnings per share (in euros) 0.86 (0.01) 9.82 2.24

(1)In 2019, mainly related to Eloctate Impairment.

(2)In 2020, includes mainly the gain on the sale of operations related to the Seprafilm product to Baxter. In 2019, net gain of 317 million related to litigation.

(3)This line includes the pre-tax income from the sale of Regeneron shares following the public offer for sale and Regeneron's repurchase on May 29, 2020. This amount includes the gain related to the remeasurement at fair value of the 400,000 retained shares that could be used to finance the R&D collaboration under the letter of agreement dated 2018.

Appendix 4: Reconciliation of Net income attributable to equity holders of Sanofi to Business net income

? million Q4 2020 Q4 2019 2020 2019 ^(1) ^(1)Net income attributable to equity holders 1,081 (10) 12,314 2,806 of SanofiAmortization of intangible assets ^(2) 394 510 1,681 2,146 Impairment of intangible assets ^(3) 5 1,581 330 3,604 Fair value remeasurement of contingent (48) 4 (124) (238) considerationExpenses arising from the impact of ? ? 53 3 acquisitions on inventoriesRestructuring costs and similar items 196 158 1,064 1,062 Other gains and losses, and litigation ^ ? (67) (136) (327) (4)Gain on sale of Regeneron shares on May ? ? (7,225) ? 29, 2020 ^(5)Tax effect of the items listed above: (101) (581) (264) (1,857) Amortization and impairment of intangible (117) (503) (541) (1,409) assetsFair value remeasurement of contingent 38 (10) 39 (6) considerationExpenses arising from the impact of ? ? (8) ? acquisitions on inventoriesRestructuring costs and similar items (32) (64) (293) (311) Gain on sale of Regeneron shares on May 2 ? 477 ? 29, 2020Other tax effects 8 (4) 62 (131) Share of items listed above attributable ? (1) (3) (4) to non-controlling interestsRestructuring costs of associates andjoint ventures, and expenses arising from ? 71 (30) 165 the impact of acquisitions on associatesand joint venturesEffect of discontinuation of use ofequity method for Regeneron investment ^ ? (132) (313) (411) (6)Animal Health Items ? 1 ? 101 Business net income 1,527 1,534 7,347 7,050 IFRS earnings per share ^(7) (in euros) 0.86 (0.01) 9.82 2.24

(1)Business operating Income restated to exclude any effect of equity method accounting for Regeneron investment and to include the Impact of lease standard IFRS 16 for comparison purposes.

(2)Of which related to amortization expense generated by the remeasurement of intangible assets as part of business combinations: 370 million in the fourth quarter of 2020 and 488 million in the fourth quarter of 2019.

(3)In 2019, mainly related to Eloctate Impairment.

(4)In 2020, includes mainly the gain on the sale of operations related to the Seprafilm product to Baxter. In 2019, net gain of 317 million related to litigation.

(5)This line includes the result of the sale of 13 million of Regenerons shares as part of the public offering and of the 9.8 million of its shares repurchased by Regeneron. The amount does not include the gain related to the remeasurement at fair value at this date of the 400,000 retained shares.

(6)Our non-GAAP indicator (Business Net Income) does not include the share of income related to equity accounting from Regeneron since it ceased to be an associate on May 29, 2020. As a result, this line reflects that exclusion up to this date.

(7)Q4: Based on an average number of shares outstanding of 1,255.1 million in the fourth quarter of 2020 and 1,253.1 million in the fourth quarter of2019. Full year : Based on an average number of shares outstanding of 1,253,6 million in full year 2020 and 1,249.9 million in full year 2019.

Appendix 5: Change in net debt

? million 2020 2019 ^ (1)Business net income 7,347 7,050 Depreciation & amortization & impairment of property, 1,507 1,593 plant and equipment and softwareOther non-cash items 34 584 Operating cash flow before change in working capital 8,888 9,227 Changes in Working Capital (35) (580) Acquisitions of property, plant and equipment and (1,329) (1,405) softwareFree cash flow before restructuring, acquisitions and 7,524 7,242 disposalsAcquisitions of intangibles assets, investments and (562) (576) other long-term financial assets ^(2)Restructuring costs and similar items paid (910) (1,142) Proceeds from disposals of property, plant andequipment, intangible assets and other non-current 930 490 assets net of taxes^(2)Free cash flow 6,982 6,014 Acquisitions of investments in consolidatedundertakings including (5,786) ? assumed debt ^(3)Proceeds from disposals of assets net of taxes ^(3) ? 672 Proceeds from Sale of Regeneron Shares on May 29,2020 10,370 ? net of taxesNet cash flow from the swap between BI- CHC and Sanofi ? 105 Animal Health businessIssuance of Sanofi shares 203 162 Acquisition of treasury shares (822) (9) Dividends paid to shareholders of Sanofi (3,937) (3,834) Other items (692) (589) Change in net debt 6,318 2,521 Beginning of period 15,107 17,628 Closing of net debt 8,789 15,107

(1)Excluding any effect of equity method accounting for Regeneron investment and including the impact of lease standard IFRS 16,for comparison purposes.

(2)Free cash flow includes investments and divestments not exceeding a cap of 500 million per transaction (inclusive of all payments related to the transaction).

(3)Includes transactions that are above a cap of 500 million per transaction (inclusive of all payments related to the transaction).

Appendix 6: Simplified consolidated balance sheet

Assets (? million) Q4 2020 Q4 2019 Liabilities & equity (? Q4 2020 Q4 2019 million) Equity attributable to equity holders of 63,001 58,934 Sanofi Equity attributable to non-controlling 146 174 interests Total equity 63,147 59,108 Long-term debt 19,745 20,131Property, plant and Non-current leaseequipment - Owned 9,365 9,717 liabilities 931 987Assets Non-current liabilities related to businessRight of use 1,198 1,300 combinations and to 387 508 non-controlling interestsIntangible assets Non-current provisions(including goodwill) 62,785 61,091 and other non-current 7,536 7,641 liabilitiesNon-current income 248 164 Non-current income tax 1,733 1,680tax assets liabilitiesNon-current financialassets & investments 7,147 11,528 Deferred tax 1,770 2,294in associates and liabilitiesdeferred tax assetsNon-current assets 80,743 83,800 Non-current liabilities 32,102 33,241 Accounts payable & Other current 15,427 15,016 liabilities Current provisions and other current 218 292 liabilitiesInventories, accounts Current income taxreceivable and other 18,580 18,376 liabilities 604 258current assetsCurrent income tax 1,208 808 Current lease 232 261assets liabilitiesCash and cash Short-term debt andequivalents 13,915 9,427 current portion of 2,767 4,554 long-term debtCurrent assets 33,703 28,611 Current liabilities 19,248 20,381Assets held for sale Liabilities related toor exchange 83 325 assets held for sale or 32 6 exchangeTotal assets 114,529 112,736 Total equity and 114,529 112,736 liabilities

Appendix 7: Other current operating income net of expenses Regeneron Alliances

? million 2020 2019Antibodies Alliance Income & Expense related to profit/loss sharing (727) (253)Additional share of profit paid by Regeneron related to 75 21development costsRegeneron commercial operating expenses reimbursement (349) (449)Total Antibodies Alliance (1,001) (681)Immuno-Oncology Alliance Total Immuno-Oncology Alliance 89 62Other Regeneron Total others related to Regeneron (mainly Zaltrap) (14) (14)Total Regeneron Alliances (926) (633)

Appendix 8: Currency sensitivity

2021 business EPS currency sensitivity

Currency Variation Business EPS SensitivityU.S. Dollar +0.05 USD/EUR -EUR 0.13Japanese Yen +5 JPY/EUR -EUR 0.02Chinese Yuan +0.2 CNY/EUR -EUR 0.02Brazilian Real +0.4 BRL/EUR -EUR 0.01Russian Ruble +10 RUB/EUR -EUR0.02

Currency exposure on Q4 2020 sales

Currency Q4 2020 US $ 39.7 % Euro ? 23.2 % Chinese Yuan 5.0 % Japanese Yen 4.5 % Mexican Peso 2.3 % British Pound 2.0 % Brazilian Real 1.7 % Canadian $ 1.5 % Russian Ruble 1.5 % Hungarian Forint 1.2 % Others 17.4 %

Currency average rates

Q4 2019 Q4 2020 Change 2019 2020 Change?/$ 1.11 1.19 +7.7 % 1.12 1.14 +1.9 %?/Yen 120.37 124.54 +3.5 % 122.08 121.76 -0.3 %?/Yuan 7.80 7.88 +1.1% 7.74 7.87 +1.7%?/Real 4.56 6.44 +41.1% 4.42 5.89 +33.4%?/Ruble 70.56 90.90 +28.8% 72.47 82.62 +14.0%

Appendix 9: Definitions of non-GAAP financial indicators

Company sales at constant exchange rates (CER)

When we refer to changes in our net sales at constant exchange rates (CER), this means that we exclude the effect of changes in exchange rates.

We eliminate the effect of exchange rates by recalculating net sales for the relevant period at the exchange rates used for the previous period.

Reconciliation of net sales to Company sales at constant exchange rates for the fourth quarter and full-year 2020

? million Q4 2020 2020Net sales 9,382 36,041 Effect of exchange rates (628) (1,293) Company sales at constant exchange rates 10,010 37,334

Business net income

Sanofi publishes a key non-GAAP indicator. Following the Regeneron shares transaction that was completed on May 29, 2020, the definition of the non-GAAP financial measure Business net income has been revised such that Share of profit/(loss) from investments accounted for using the equity method excludes the effects of applying the equity method to the investment in Regeneron. The comparative periods of 2019 presented have been restated to reflect that adjustment.

Business net income is defined as net income attributable to equity holders of Sanofi excluding:

-- amortization of intangible assets, -- impairment of intangible assets, -- fair value remeasurement of contingent consideration related to business combinations or to disposals, -- other impacts associated with acquisitions (including impacts of acquisitions on associates and joint ventures), -- restructuring costs and similar items(1), -- other gains and losses (including gains and losses on disposals of non-current assets(1)), -- costs or provisions associated with litigation(1), -- gain on Regeneron investment as a result of the transaction completed on May 29, 2020 (the amount does not include the gain related to the remeasurement at fair value at this date of the 400,000 retained shares), -- tax effects related to the items listed above as well as effects of major tax disputes, -- effect of equity method accounting for Regeneron investment (excluded from Business net income as a consequence of the sale of the entire equity investment in Regeneron (with the exception of 400,000 shares retained by Sanofi) on May 29th 2020, -- net income attributable to non-controlling interests related to the items listed above.

(1) Reported in the line items Restructuringcostsand similar items and Gains and losses on disposals, and litigation, which are defined in Notes B.19. and B.20. to our consolidated financial statements.

Free cash flow

Free cash flow is a non-GAAP financial indicator which is reviewed by our management, and which we believe provides useful information to measure the net cash generated from the Companys operations that is available for strategic investments1 (net of divestments1), for debt repayment, and for capital return to shareholders. Free Cash Flow is determined from the Business Net Income adjusted for depreciation, amortization and impairment, share of profit/loss in associates and joint ventures net of dividends received, gains & losses on disposals, net change in provisions including pensions and other post-employment benefits, deferred taxes, share-based expense and other non-cash items. It comprises net changes in working capital, capital expenditures and other asset acquisitions2 net of disposal proceeds2, and payments related to restructuring and similar items. Free cash flow is not defined by IFRS and it is not a substitute measure for the IFRS aggregate net cash flows in operating activities.

1 Amount of the transaction above a cap of 500 million per transaction (inclusive of all payments related to the transaction).

2 Not exceeding a cap of 500 million per transaction (inclusive of all payments related to the transaction).

Reconciliation from net cash provided by/(used in) operating activities to free cash flow

? million 2020 2019Net cash provided by/(used in) operating activities in the 7,449 7,744 Consolidated statements of cash flows^(1)Acquisition of property, plant and equipment and software (1,329) (1,405) Acquisitions of intangibles assets, investments and other (562) (576) long-term financial assets^(2)Proceeds from disposals of property, plant and equipment,intangible assets and other non-current assets net of taxes 930 490 ^(2)Repayment of lease liabilities^(3) (234) (267) Others^(4) 728 28 Free cash flow^(5) 6,982 6,014

1 Most directly comparable IFRS measure to free cash flow.

2 Transactions up to 500 million per transaction.

3 Following the application of IFRS 16, the payment for the principal portion of the lease liabilities is included in the free cash flow.

4 This line mainly includes the reclassification in cash flows linked to financing activities of the foreign exchange result realized on financial monetary items and related hedging instruments.

5 Non IFRS indicator (see definition in Appendix 9).

IFRS 16

The new lease accounting standard (IFRS16) impact mainly comes from the amortization of the lease asset recognized on a straight-line basis while the interest expense decreases over the life of the lease. IFRS16 standard is effective as of January 1, 2019. The impact on business EPS is -2 cents in 2019. The 2019 business net income statements including the effect of (i) the lease accounting standard IFRS 16 and (ii) some expenses reported differently in the segment information to conform with the companys new management reporting is available on Sanofis internet website:

https://www.sanofi.com/en/investors/company-overview/key-financial-data

Attachment

-- Press Release Q4 2020