Tobin Sullivan is a versatile corporate and securities attorney who counsels growth equity and venture capital investors and growing life sciences and technology companies, ranging from start-ups to pre-IPO companies to global public companies, on a wide range of transactional and corporate law matters. With extensive experience in venture capital and late-stage, cross-over financings for life sciences, biotech and healthIT companies, he is described by clients as a highly responsive, strategic thinker who balances his strong market knowledge with practical business advice.
Tobin provides general corporate guidance on a variety of business matters, including venture capital and growth equity financings, national and cross-border mergers and acquisitions, corporate governance matters, public company reporting, and SEC compliance. His clients have included Bain Capital Life Sciences, Surveyor Capital (a Citadel company), Andreessen Horowitz (a16z), Sectoral Asset Management, Transformation Capital, Pegasystems, Forrester Research, Riverside Partners, Summit Partners, and M/C Partners.
- Massachusetts Super Lawyers Rising Star
Venture Capital & Private Equity Engagements:
- Bain Capital Life Sciences’ growth equity investments in biotech companies, including:
- Arcutis Biotherapeutics (Nasdaq: ARQT) - $95 million Series C financing
- Aptinyx (Nasdaq: APTX) - $70 million Series B financing
- Atea Pharmaceuticals - $215 million Series D financing
- ViaCyte - $80 million Series D financing
- JenaValve Technology - $50 million private financing
- Transformation Capital’s growth equity investments in Health IT and healthcare services companies.
- Surveyor Capital’s cross-over and venture capital investments in life sciences companies, including:
VelosBio - $137 million Series B financing
Allogene (Nasdaq: ALLO) - $120 million private financing
Zentalis Pharmaceuticals (Nasdaq: ZNTL) - $85 million Series C financing
NextCure (Nasdaq: NXTC) - $93 million Series B financing
Annexon Biosciences (Nasdaq: ANNX) - $100m Series D and $75 million Series C financings
SpringWorks Therapeutics (Nasdaq: SWTX) - $125 million Series B financing
Satsuma Therapeutics (Nasdaq: STSA) - $62 million Series B financing
AVROBIO (Nasdaq: AVRO) - $60 million Series B financing
Gossamer Bio (Nasdaq: GOSS) - $230 million Series B financing
Sutro Biopharma (Nasdaq: STRO) - $84 million Series E financing
Akouos (Nasdaq: AKUS) – $105 million Series B financing
ElevateBio - $170 million Series B financing
Praxis Precision Medicines - $110 million Series C financing
Pliant Therapeutics - $100 million Series C financing
Bolt Biotherapeutics - $93.5 million Series C financing
Athira Pharmaceuticals - $85 million Series B financing
Spruce Biosciences - $88 million Series B financing
Oncorus - $80 million Series B financing
- Andreessen Horowitz’s venture capital investment in Ribbon Health.
M/C Partners’ carve-out acquisition of Ascend Technologies from West Monroe Partners.
Riverside Partners’ majority investment in 3Play Media.
- Sectoral Asset Management’s growth equity investments in therapeutics companies, including:
- Apellis Pharmaceuticals (Nasdaq: APLS) - $60 million Series E financing
- Pipeline Therapeutics - $30 million Series B financing
Business & Technology Engagements:
- Pegasystems Inc.’s (Nasdaq: PEGA) $600 million 144A convertible note financing.
- General counsel to satellite broadband company, including advising on its $1+ billion equity financing led by SoftBank.
- Datawatch Corporation’s (Nasdaq: DWCH) $176 million merger with Altair Engineering (Nasdaq: ALTR).
- Examity Inc.’s $90 million growth equity investment from private equity firm Great Hill Partners.
- BioRx’s $350 million sale to Diplomat Pharmacy (NYSE: DPLO).
- Cyteir Therapeutics’ equity financing led by Venrock Partners, Celgene, Lightstone Ventures, and DROIA Oncology Venture.
- Cosman Medical’s sale to Boston Scientific (NYSE: BSX).
- FP Resources USA Inc.’s take-private acquisition of The First Marblehead Corporation (NYSE: FMD).
- Datawatch Corporation’s (NASDAQ: DWCH) acquisition of Angoss Software Corporation.
Publications and Presentations
Professional and Community Involvement
- Corporate pro bono work for the Center for Women & Enterprise
- Pro bono clients from the Lawyer’s Clearinghouse and Massachusetts Legal Clinic for the Homeless
- Member of the Boston Bar and American Bar Associations
- Member of Choate’s Hiring Committee
Education & Credentials
- Northeastern University School of Law
- JD, 2012
- Staff Member, Northeastern University Law Journal
- Cornell University
- BS, 2007
The Legal 500 2021 recognized 31 Choate attorneys in their respective fields and 11 practice areas, with education and middle-market M&A receiving Tier 1 rankings.
Choate represented The Chernin Group as the lead investor in The Pro’s Closet’s $40M Series B financing round.
Choate represented Transformation Capital as the lead investor in a $25M Series B financing for SWORD Health, an employer-based digital physical therapy company with a focus on musculoskeletal disorders.
Late on December 21, 2020, Congress passed its latest stimulus package. The bill expands the Paycheck Protection Program, which was originally established when the CARES Act was enacted earlier this year. Our Private Equity Group summarizes what you need to know about the new stimulus package, including changes for new and existing loans.
In the inaugural episode of the Choate Business Insights podcast series, John Pitfield, Dan Riley, and Tobin Sullivan discuss private equity investments in public companies through Private Investment in Public Equity (PIPE) transactions, including the current trends and structure of PIPE transactions.
Choate represented Surveyor Capital (a Citadel company) as co-lead investor in the oversubscribed Series B financing round for VelosBio, a clinical-stage biopharmaceutical company committed to developing novel, first-in-class cancer therapies targeting receptor tyrosine kinase-like orphan receptor 1.