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Tesaro
London, GB · 92,017 employees on LinkedIn · 5 known investors
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GSK is a biopharmaceutical company that discovers, develops, and delivers medicines and vaccines for patients. Its research focuses on four therapeutic areas: respiratory, immunology and inflammation; oncology; HIV; and infectious diseases.
Founders & leadership
Board
Investors · 5
How we know: Kleiner Perkins's portfolio page · board seat on SEC Form D · Not right? Tell us
How we know: board seat on SEC Form D · funding news · open dataset · 5k.vc investor directory · Not right? Tell us
How we know: Pappas Capital's portfolio page · Not right? Tell us
How we know: Ridgeback Capital's portfolio page · Not right? Tell us
How we know: a partner's Signal profile · Not right? Tell us
Reported raises · per SEC filings
Form D private placements$205M disclosed across 2 rounds · 2016
▶$50MraisedApr 2016 · 1 investors · PharmaceuticalsRule 506(b)
- Grant C. BogleExecutive Officer
- Timothy R. PearsonExecutive Officer
- Leon O. Moulder, Jr.Executive Officer, Director
- Mary Lynne HedleyExecutive Officer, Director
- Jeffrey HankeExecutive Officer
- Kavita PatelDirector
- Lawrence AllevaDirector
- Earl M. Collier, Jr.Director
- Martin H. HuberExecutive Officer
- Joseph L. FarmerExecutive Officer
- James O. ArmitageDirector
- Garry A. NicholsonDirector
- David M. MottDirector
- Beth SeidenbergDirector
- Arnold L. OronskyDirector
- Offering amount
- $50M
- Amount sold
- $50M
- First sale
- Apr 2016
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$155MraisedMar 2016 · 7 investors · PharmaceuticalsRule 506(b)
- Jeffrey HankeExecutive Officer
- Joseph L. FarmerExecutive Officer
- Grant C. BogleExecutive Officer
- Garry A. NicholsonDirector
- Lawrence AllevaDirector
- Beth SeidenbergDirector
- Mary Lynne HedleyExecutive Officer, Director
- Arnold L. OronskyDirector
- Martin H. HuberExecutive Officer
- James O. ArmitageDirector
- Timothy R. PearsonExecutive Officer
- Leon O. Moulder, Jr.Executive Officer, Director
- David M. MottDirector
- Earl M. Collier, Jr.Director
- Offering amount
- $155M
- Amount sold
- $155M
- First sale
- Feb 2016
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
Companies House · registry record
View on Companies House ↗- Registered name
- TESARO UK LIMITED
- Company number
- 07890847
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 22 Dec 2011
- Registered office
- 79 New Oxford Street, London, WC1A 1DG
- Nature of business (SIC)
- 82990 — Other business support service activities n.e.c.
- Accounts
- last made up to 31 Dec 2025 · next due 30 Sept 2027
- Confirmation statement
- last made up to 17 Sept 2026 · next due 1 Oct 2027
Current officers · 5
- Edinburgh Pharmaceutical Industries Limited — corporate secretary, appointed 11 Nov 2019
- Laura Guittard — director, appointed 11 Jan 2022
- Demet Gurunlu Russ — director, appointed 25 Jun 2024
- Edinburgh Pharmaceutical Industries Limited — corporate director, appointed 30 Mar 2020
- Glaxo Group Limited — corporate director, appointed 30 Mar 2020
Source: Companies House public register · retrieved 20 Sept 2026. Contains public sector information licensed under the Open Government Licence v3.0.
Frequently asked questions
- What does Tesaro do?
- GSK is a biopharmaceutical company that discovers, develops, and delivers medicines and vaccines for patients. Its research focuses on four therapeutic areas: respiratory, immunology and inflammation; oncology; HIV; and infectious diseases.
- Who founded Tesaro?
- Tesaro was founded by Mary Lynne Hedley, Leon O. Moulder, Jr..
- Who are Tesaro's investors?
- Tesaro's investors include Kleiner Perkins, New Enterprise Associates (NEA), Pappas Capital, Ridgeback Capital, Avoro Capital Advisors.
- How much funding has Tesaro raised?
- Tesaro has disclosed $205M raised across 2 rounds.
- Where is Tesaro headquartered?
- Tesaro is headquartered in London, GB.