Growth Equity

Brian Frank is Founder and the Managing Partner of Declaration Partners and Co-Head of Growth Equity. Brian is also a Founding Partner of BayPine, a sister investment firm focused on buyouts with a digital transformation potential. Previously, Brian was a Partner and Portfolio Manager at MSD Partners, where he invested in private and public companies in the energy and industrials sectors.

Prior to MSD Partners, Brian was a Partner and Portfolio Manager at Cumberland Associates, where he oversaw investments in aerospace, energy, industrials and transportation companies. Earlier in his career, Brian was a Director at Harman International, a Principal in growth equity at WR Hambrecht + Co focused on technology investments, and an Investment Banking Analyst at Lazard Frères

Brian graduated from Harvard College, where he studied Government and Economics, and earned his MBA from Harvard Business School. Brian currently serves as a board member of Redesign Health, Vault Health, and StubHub Holdings.

Outside of work, Brian is a Director of Third Way, on the Rockefeller University Council, a life member of the Council on Foreign Relations, and enjoys travel, live experiences, and public policy.

Brian Stern is a Partner and Co-Head of Growth Equity, where he focuses on fintech and blockchain investments.

Prior to joining Declaration in 2019, Brian served as Head of Strategic Investments for Stone Ridge Asset Management. Previously, he spent eight years at BlackRock, where he was Managing Director and Head of BlackRock Private Markets. Brian also served in the US Treasury as a member of the Presidential Task Force on the Auto Industry. Earlier in his career, he was a Director at Merrill Lynch Global Private Equity, an Engagement Manager at McKinsey & Co., and an Analyst in the M&A group at Smith Barney.

Brian graduated from Harvard College, where he studied History and Literature with a focus on late 19th century America, and earned his JD from Yale Law School. Brian currently serves as a board member of Paxos Trust Company, Sure, and Altruist.

Outside of work, Brian serves on the board of the Carver Center of Port Chester, NY and enjoys camping on the Appalachian Trail with his children, cycling, and racquet sports.

Elliot Wagner is a Partner and Co-Head of Growth Equity, where he focuses on consumer.

Prior to joining Declaration in 2019, Elliot spent over 18 years at The Carlyle Group where he was a Partner and Managing Director in Carlyle’s US buyout fund and a member of the consumer & retail team since 2009. Previously, he was a member of the aerospace, defense & government services team based in Washington, DC. Elliot began his career in the M&A group at Lehman Brothers.

Elliot graduated from Cornell University, where he studied Applied Economics and Management. Elliot currently serves as an Emeritus member on the Advisory Council of the Dyson School of Applied Economics and Management at Cornell University as well as on the boards of LMI and Ever/Body, a Redesign Health portfolio company.

Elliot enjoys spending time with his wife and two children, playing tennis, discovering new brands, and is a passionate foodie.

Robert Thwaits is a Managing Director and a member of the growth equity investment team where he focuses on healthcare.

Prior to joining Declaration in 2021, Robert spent seven years at Warburg Pincus investing in healthcare growth companies. He began his career at Barclays in the Healthcare M&A Investment Banking Group.

Robert graduated from Harvard College, where he studied Economics. He earned his MBA from Stanford’s Graduate School of Business where he was an Arjay Miller Scholar. Robert currently serves on the board of Springtide, a Redesign Health portfolio company, and is a Board Observer at PetDx.

In his spare time, Robert enjoys international travel, board games, and science fiction.

Omar Khatib is a Vice President and a member of the growth equity investment team where he focuses on fintech, blockchain, and gaming.

Prior to joining Declaration in 2020, Omar worked at Barclays in the Technology Investment Banking Group focusing on enterprise software and payments.

Omar graduated from Johns Hopkins University, where he studied Applied Math and Statistics, International Studies and Islamic Studies and was a member of Johns Hopkins’ first student-run VC fund, A-Level Capital. Outside of work, Omar enjoys sailing, playing pickup soccer across the city, gaming, photography, and exploring fringe DeFi protocols.

Rachel Kupelian is a Vice President and member of the growth equity investment team. Prior to joining Declaration in 2022, Rachel was an investor at Global Infrastructure Partners, a New York-based private equity firm, where she focused on opportunities within the Energy and Transportation sectors. Previously, she worked at Stifel Financial in the Healthcare Investment Banking Group focusing on Biopharma, MedTech and Healthcare Services transactions.

Rachel graduated from the University of Pennsylvania, where she studied Economics and Consumer Psychology. Outside of work, Rachel enjoys skiing, golfing, hiking, and reading.

Lucas Sheiner is a Vice President and a member of the growth equity investment team where he focuses on consumer and enterprise software.

Prior to joining Declaration in 2021, Lucas worked at JPMorgan in the Technology Investment Banking Group focusing on fintech, enterprise software, and consumer internet.

Lucas graduated from Amherst College, where he studied Political Science, co-founded the Rate Our Courses platform, and was a member of the Men’s Varsity Squash team. Outside of work, Lucas enjoys snowboarding, traveling, and Toronto Raptors playoff runs.