Thrive Capital’s healthcare-specialist General Partner, board member of TrialSpark, board observer at Formation Bio, and Josh Kushner’s representative inside the company that operated Project Covalence — in every round from seed to Series D.
Bio
Kareem Zaki is a General Partner at Thrive Capital, the venture capital firm founded by Josh Kushner (brother of Jared Kushner). Zaki joined Thrive in 2014 and specializes in healthcare technology investments, serving on the boards of numerous healthcare and fintech companies. He is also a co-founder — not just an investor — of several companies in his portfolio, including Cedar (healthcare payments) and Nava Benefits (employee health benefits platform), making him a hybrid investor-operator. [1][2][3]
Prior to Thrive, Zaki worked as an Investment Banking Analyst at JP Morgan, a Business Analyst at McKinsey, and a Private Equity Investor at The Blackstone Group — three years of PE experience before entering venture. He holds an A.B. from Harvard University in economics and healthcare policy. He was named to the Forbes 30 Under 30 list in 2018 for Venture Capital. [2][4]
Zaki’s board portfolio is extensive: Cedar, Honor, Nava, Oscar Health, Rightway, Scope Security, Cadence, Clair, Headway, Pipo Saude, Pleo, Ramp, Rize, TrialSpark, and Welkin. He has also invested in Affirm, Lemonade, Robinhood, Trade Republic, Morty, Nourish, and Vetcove. [1][3][5]
In this investigation, Zaki is Thrive Capital’s designated representative inside TrialSpark/Formation Bio — the person through whom Josh Kushner’s capital exercises governance. He has been on the TrialSpark board from the early stages and transitioned to board observer at Formation Bio at the Series D. Thrive Capital has been in every single funding round from seed to Series D — the only investor with that complete continuity alongside Sequoia. [6]
Basic Information
| Field | Detail |
|---|---|
| Full Name | Kareem Zaki |
| Current Title | General Partner, Thrive Capital |
| Education | Harvard University A.B. (Economics and Healthcare Policy) |
| Prior Career | JP Morgan (IB Analyst) → McKinsey (Business Analyst) → Blackstone Group (PE, 3 years) → Thrive Capital (2014-present) |
| Recognition | Forbes 30 Under 30 (2018, Venture Capital) |
| Co-Founded | Cedar (healthcare payments), Nava Benefits, Scope Security, Cadence |
| Thrive Fund Size | $2B (Fund VIII per VCSheet), $3B (per TechCrunch) |
| Investment Range | $100K – $50M, sweet spot $25M |
The Thrive-TrialSpark Continuity
Thrive Capital (Kushner) has been in TrialSpark/Formation Bio at every stage — the only investor with complete continuity alongside Sequoia:
| Round | Date | Thrive Representative | Role |
|---|---|---|---|
| Seed | Sep 28, 2017 | Thrive Capital | Investor (alongside Sequoia/Lin) |
| Venture Round | Oct 15, 2018 | Thrive Capital | Investor |
| Series C | Sep 30, 2021 | Kareem Zaki (named) | Investor |
| Series D | Jun 2024 | Kareem Zaki (named) | Board Observer |
Zaki is also listed as a board member of TrialSpark per The Org and ZoomInfo — not just an observer. [1][5] This suggests he held a full board seat at the TrialSpark stage and transitioned to observer at the Formation Bio/Series D stage when Kupor (a16z) and Lin (Sequoia) took formal board seats.
Network Connections
| Connection | Nature | Significance |
|---|---|---|
| Josh Kushner | Thrive Capital founder. Zaki is his healthcare partner. | Kushner = Jared Kushner’s brother. Thrive in TrialSpark since seed. |
| OpenAI | Thrive led ~$1.8B Stripe commitment AND had exclusive OpenAI investment rights during Nov 2023 governance crisis. [3] | Thrive on both sides: Formation Bio investor + OpenAI investor. Same dual-exposure as Doerr. |
| Ramp | Zaki is board member. Ramp = Founders Fund/Thiel portfolio company. | Thiel-adjacent through Ramp. Founders Fund led 5 consecutive Ramp rounds. |
| Oscar Health | Zaki board member. Oscar = Kushner’s co-founded healthcare company. | Kushner is co-founder AND Zaki is board member. Healthcare insurer in same portfolio as pharma company. |
| Blackstone | Zaki’s 3-year PE background. Formation Bio CFO James Leslie’s prior employer. | Two Formation Bio-adjacent individuals with Blackstone background. |
Investigative Findings
Finding 1: The Kushner Representative at Every Stage
Zaki is the physical embodiment of Thrive Capital’s governance interest in TrialSpark/Formation Bio. Through him, Josh Kushner’s capital has had continuous board-level representation from the early stages through the €545M Sanofi licensing deal. [1][5][6]
Thrive Capital and Sequoia are the ONLY two investors present at every single funding round (seed through Series D). This means Kushner’s money and Moritz’s money have been co-present in this company for its entire institutional life — from LabNook through Formation Bio, through Project Covalence, through the rebrand, through the Sanofi Muse launch, through the €545M deal.
Finding 2: The Dual Investor-Operator Model
Zaki isn’t just deploying Kushner’s capital — he co-founded Cedar, Nava, Scope Security, and Cadence while simultaneously serving as Thrive GP and board member at TrialSpark. [2][3] This hybrid model means Zaki has operational healthcare experience that directly informs his governance of a pharma company. It also means his time and attention are split across his own companies and his board portfolio — a relevant consideration for governance oversight quality.
Finding 3: The Thrive-OpenAI Exclusive Rights
VCSheet reports that Thrive had “exclusive OpenAI investment rights during the governance crisis” (November 2023). [3] If Thrive invested in OpenAI AND Thrive has board representation at Formation Bio (through Zaki), then Kushner’s firm has financial interest on both sides of the Formation Bio + OpenAI Muse platform partnership — the same dual-exposure pattern documented for Doerr and potentially Lin.
Nodes / Open Questions
- When exactly did Zaki join the TrialSpark board? Was he a board member before the Series C (Altman-led) or appointed as part of it?
- Does Zaki have any awareness of or involvement in Project Covalence? As a healthcare-specialist board member of TrialSpark, he would have been informed of the OpenResearch grant, the resTORbio collaboration, and the Mina study. What did he know about the nursing home trial outcomes?
- Thrive’s OpenAI investment size and terms? The “exclusive rights during governance crisis” implies Thrive invested during the November 2023 chaos when Altman was fired and reinstated. What were the terms? Does this create a financial dependency between Thrive and Altman personally?
- The Blackstone pipeline: Zaki spent 3 years at Blackstone in PE. Formation Bio CFO James Leslie spent 11 years at Blackstone in restructuring. Two Blackstone alumni in the same company’s governance/operations is a personnel concentration worth noting.
- Oscar Health and Formation Bio: Kushner co-founded Oscar Health (health insurance). Zaki is on Oscar’s board AND TrialSpark’s board. If Formation Bio’s drugs are covered by Oscar Health’s insurance plans, that’s a captive payer-pharma relationship through the same investor’s portfolio.
Sources
- [Archive] ZoomInfo — Kareem Zaki, Partner at Thrive Capital, board member including TrialSpark: https://www.zoominfo.com/p/Kareem-Zaki/10492626649
- [Archive] Crunchbase — Kareem Zaki, GP Thrive Capital, JP Morgan/McKinsey/Blackstone, Forbes 30 Under 30: https://www.crunchbase.com/person/kareem-zaki
- [Archive] VCSheet — Kareem Zaki, Thrive’s “secretive” brand, $1.8B Stripe commitment, exclusive OpenAI rights: https://www.vcsheet.com/who/kareem-zaki
- [Archive] 20VC — Kareem Zaki interview (co-founder Cedar/Nava/Scope, Blackstone PE, Thrive culture): https://www.thetwentyminutevc.com/kareem-zaki
- [Archive] The Org — Kareem Zaki, GP Thrive Capital, board member TrialSpark: https://theorg.com/org/thrive-capital/org-chart/kareem-zaki
- [Archive] Prior investigation sessions — Thrive in every TrialSpark/Formation Bio round (seed through Series D). Zaki named at Series C and D. Confirmed from Crunchbase.
This analysis does not constitute evidence of illegal action. The opinions expressed here are the professional opinions and analytical conclusions of the author, a published corporate ethics researcher and analyst specializing in business leadership ethics, governance structures, and nonprofit compliance. Readers are encouraged to examine the primary sources cited above and draw their own conclusions.
A conflict does not become less important because it was routed through a quieter entity. It becomes more important to map.
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