Third Rock Ventures, LLC.
Third Rock Ventures is a leading healthcare venture firm focused on advancing disruptive areas of science and medicine to deliver breakthroughs to…
In the firm's own words, from its website.
5 additional team members, 1 additional co-investor or affiliate, 10 additional investments, funds and LPs, 11 events, 1 verified contact (1 firm phone)
Every relationship, signal and contact on this record, with the source on each.
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
Nothing material in the last 180 days.
People to know
View all people- Manager/MemberWhy: Named with investment responsibilityNo route on file yet
- Manager/MemberWhy: Named with investment responsibilityNo route on file yet
- Executive OfficerWhy: Named with investment responsibilityNo route on file yet
Relationship network
23 connected entities2 observed rounds1 dated round shown here, 2009
From financing rounds and every investor named in them, Form ADV and Form D filings, the firm's funds and team, and disclosed LP commitments in the venture capital graph. A round's amount is the size of the round, not money that moved between two investors.
Some relationships on this record are counted rather than named here. They open with the full profile.
Click any name or line for the rounds and sources behind it. Line weight is rounds together; dashed lines are inferred.
- Sponsor
- Company
- Fund or vehicle
- Person
›How strength and recency are read
Co-investors are read from the rounds: three or more shared rounds is a strong observed relationship, two a repeat co-investor, one a single round. Funds and people are structural. Nothing is scored that a reader cannot check.
Darker lines were active in the last 24 months or are current; lighter lines are older or undated.
How am I connected?
Name your firm, a company or a person, and DFX finds the published routes to Third Rock Ventures, LLC.: a shared portfolio company or board, a prior employer, a co-investor, a shared LP or service provider. Every step is a filed or published record with its source; none is a guess about who knows whom.
See how you connect to Third Rock Ventures, LLC.
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
Investing
4 companies on record, 0 new in 12 months
Investments on record
What these amounts mean“This investor” is the amount disclosed for this investor alone; it is unknown unless a source said it. The round size is the whole round.Acquired, Public, Exited and Active are what the firm’s own portfolio card says, read on the date shown when you hover the chip; they are not deal dates. A company with no chip is one whose card states no outcome: DFX does not assume it is active.| Company | Round | Role | Partner | Round size | This investor | Date | Source |
|---|---|---|---|---|---|---|---|
| Corvia Medical, Inc. | portfolio listing | unknown | unknown | unknown | unknown | Sep 30, 2026 | Fact Company website |
| Asherbio | portfolio listing | lead | unknown | unknown | unknown | Sep 17, 2026 | Fact Company website |
| Afferent Pharmaceuticals | Form D equity offering | unknown · board | Kevin Paul Starr (strongly supported) | $150,000 form d sold | unknown | Nov 5, 2009 | Inference Form D |
Stated thesis versus observed behaviour
- Sectors
- biotech
- Stages
- not stated or not yet read
- Geography
- boston
- Check size
- not stated; DFX does not estimate checks from round sizes
Team
8 current, 3 departed
Decision makers
Ranked by the role the firm or its filing states, a route on file and deals led. Every reason is read from the record, never inferred. Routes are published by the person or the firm (their bio, the team page or a filing) and are revealed on a plan; data bought from a provider is never shown, and a route printed at a firm the person has since left is held back.
Investment team
How the team is orderedPartners who lead rounds first (rounds led, then deals attributed, then seniority), then the rest of the investment team, then investor relations, finance and operations. A person named by two sources under two spellings is shown once.- Manager/Member
- Manager/Member
- Executive Officer
3 departed (kept with end dates)
- Kevin Paul Starr · Manager/Member · Dec 1, 2014 to Mar 31, 2022 Inference
- Mark Jay Levin · Manager/Member · Dec 1, 2014 to Mar 31, 2022 Inference
- Alexis Borisy · Effective Officer · Sep 1, 2016 to Mar 19, 2019 Inference
Contacts
1 firm phone on record, each with its source. Values open with the complete profile.
Funds and LPs
7 vehicles, 0 LPs disclosed
Funds and vehicles
What these amounts meanGAV is the gross asset value the adviser reported on Form ADV for the vehicle, never the fund’s committed size and never dry powder. Form D sold is the amount sold as of the latest filing, never a final close.| Vehicle | Type | Vintage | Lifecycle | Reported GAV | Owners | Form D sold | Latest Form D |
|---|---|---|---|---|---|---|---|
| Third Rock Ventures VI, L.P. | Fund | 2022 form d first sale | Active deployment | $787M Mar 19, 2026 | 66 | $1.1B of $1.1B | Jun 10, 2022 |
| Third Rock Ventures V, L.P. | Fund | 2019 form d first sale | Mature | $736M Mar 19, 2026 | 68 | $750M of $750M | Jun 7, 2019 |
| Third Rock Ventures IV, L.P. | Fund | 2016 form d first sale | Harvest | $326M Mar 19, 2026 | 58 | $600M of $600M | Nov 2, 2016 |
Limited partners
Known LPs and allocators
What these amounts and dates areEach commitment is counted once across the pension tape and the allocator graph. A commitment date prints only when the source printed one; otherwise the row carries the report date. A foundation’s 990-PF line is a holding at fair value, never a commitment. Rows without a fund on the venture graph are commitments to this manager.| Allocator | Type | Fund | Amount | Date | Source |
|---|---|---|---|---|---|
| Hess Philanthropic Fund | FOUNDATION | Third Rock Ventures VI, L.P. | $949,933 fair value on the foundation's return | reported as of Nov 30, 2025 | Fact IRS Form 990 / 990-PF e-file returns |
| The Grantham Foundation for the Protection of the Environment | FOUNDATION | Third Rock Ventures III, L.P. | $238,124 fair value on the foundation's return | reported as of Dec 31, 2024 | Fact IRS Form 990 / 990-PF e-file returns |
| Pritzker Traubert Foundation | FOUNDATION | Third Rock Ventures V, L.P. | $2.6M fair value on the foundation's return | reported as of Dec 31, 2024 | Fact IRS Form 990 / 990-PF e-file returns |
Relationships across DFX
4 co-investors · on 2 other DFX graphs
Co-investors
- 2026-10-011 shared deal · one time
- 2026-09-301 shared deal · one time
- 2026-09-171 shared deal · one time · this firm led 1
Compare portfolios with Accelmed Partners II Management, LLC, Lumira Capital, Mission Biocapital or any firm. Co-investors across the market
Across DFX and the capital chainon 2 other DFX graphs · 6 capital paths ShowHide
- The same institution is held on Allocators, RIA and Wealth, matched by identifier. See which records
Third Rock Ventures, LLC. is the same institution as 2 records in Allocators and RIA and Wealth.
DFX found 2 relationships across 2 datasets
Which record it is in each graph, what it is called there, and how the two were matched.
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
Checking your plan…
Third Rock Ventures, LLC. sits on 6 traced paths of capital across the graphs.
DFX traced 6 paths of capital through this record
Every record on each path, what it committed or lent, and as of when.
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
Derived from allocator disclosures, BDC schedules and SEC filings; confidence is the weakest hop.
Checking your plan…
Evidence and history
16 dated events, 68 observations from 3 sources
Timeline
- Jun 3, 2026Third Rock Ventures, LLC. filed the first Form D for Third Rock Ventures VII, L.P. (fund 7), its next fund after Third Rock Ventures VI, L.P. (vintage 2022); offering $750.0M
- Mar 29, 2023Third Rock Ventures VI, L.P. first reported on Form ADV by Third Rock Ventures, LLC. (Venture Capital Fund), GAV $1,112,827,403
- Mar 31, 2022Kevin Paul Starr (Manager/Member) no longer on Schedule A of Third Rock Ventures, LLC.
- Mar 31, 2022Mark Jay Levin (Manager/Member) no longer on Schedule A of Third Rock Ventures, LLC.
- Jan 1, 2022Alison Connors joined Schedule A of Third Rock Ventures, LLC. as Chief Financial Officer
Identity and regulatory footprint
Address, phone, Form ADV filing and ownersForm ADV filed Mar 19, 2026 · 5 private fundsShowHide
- Headquarters
- Boston, MAadviserinfo.sec.gov
- Office address
- unknownadviserinfo.sec.gov
- Business phone
- unknownadviserinfo.sec.gov
- Website
- THIRDROCKVENTURES.COM
- SEC adviser type
- Exempt reporting adviseradviserinfo.sec.gov
- SEC exemption claimed
- Venture capital fund adviseradviserinfo.sec.govItem 2.B(1): advises solely venture capital funds
- Latest Form ADV
- Mar 19, 2026
- Private funds reported
- 5 (5 venture capital funds)adviserinfo.sec.gov
- Private fund gross assets, adviser total
- $1.9Badviserinfo.sec.govreported GAV of the funds, the adviser's own number; not fund size, not dry powder
- Owners on Schedule A
- Third Rock Ventures Holdings, L.P. (Member), owns 75% or more; Third Rock Ventures Management, LLC (General Partner)
Classification history
Classification history
Every classification this record has carried2 on recordShowHide
- Sep 23, 2026Institutional venture firm (confirmed, 95%)Venture manager, reported GAV $1.9B across 7 vehicles
- Sep 12, 2026Institutional venture firm (confirmed, 95%)Venture manager, reported GAV $2.4B across 7 vehicles
Evidence
Every observation behind this profile, with its source, date and class
| Fact | Value | Effective | Class | Source |
|---|---|---|---|---|
| Why admitted | VC exemption, VC funds reported | Mar 19, 2026 | Fact | Form ADV |
| SEC exemption claimed | Venture capital fund adviser | Mar 19, 2026 | Fact | Form ADV |
| SEC exemption claimed | Venture capital fund adviser | Mar 26, 2024 | Fact | Form ADV |
| SEC adviser type | Exempt reporting adviser | Mar 19, 2026 | Fact | Form ADV |
| SEC adviser type | Exempt reporting adviser | Mar 19, 2026 | Fact | Form ADV |
| SEC adviser type | Exempt reporting adviser | Mar 26, 2024 | Fact | Form ADV |
| First Form ADV filing | 2012-03-28 | Mar 19, 2026 | Fact | Form ADV |
| First Form ADV filing | 2012-03-28 | Mar 26, 2024 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-30 | Oct 1, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-29 | Sep 30, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-25 | Sep 26, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-23 | Sep 24, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-21 | Sep 23, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1+panel:2026-09-22 | Sep 23, 2026 | Fact | Form ADV |
| Adv history loaded | adv-hist-1 | Sep 12, 2026 | Fact | Form ADV |
| Latest Form ADV filing | 2026-03-19 | Mar 19, 2026 | Fact | Form ADV |
| Latest Form ADV filing | 2026-03-19 | Mar 19, 2026 | Fact | Form ADV |
| Latest Form ADV filing | 2024-03-26 | Mar 26, 2024 | Fact | Form ADV |
| SEC status | ERA - Active | Mar 19, 2026 | Fact | Form ADV |
| SEC status effective | 2012-03-28 | Mar 19, 2026 | Fact | Form ADV |
| Venture share of reported funds | 1 | Mar 19, 2026 | Fact | Form ADV |
| Venture share of reported funds | 1 | Mar 26, 2024 | Fact | Form ADV |
| Business phone | Mar 19, 2026 | Fact | Form ADV | |
| Business phone | Mar 26, 2024 | Fact | Form ADV | |
| Description | Sep 16, 2026 | Fact | ||
| Description | Sep 14, 2026 | Fact | ||
| Headquarters | Boston, MA | Mar 19, 2026 | Fact | Form ADV |
| Headquarters | Boston, MA | Mar 26, 2024 | Fact | Form ADV |
| Office address | Mar 19, 2026 | Fact | Form ADV | |
| Office address | Mar 26, 2024 | Fact | Form ADV | |
| Legal form | Limited Liability Company | Mar 19, 2026 | Fact | Form ADV |
| Legal form | Limited Liability Company | Mar 26, 2024 | Fact | Form ADV |
| Portfolio page | Sep 16, 2026 | Fact | ||
| Portfolio page | Sep 14, 2026 | Fact | ||
| Private funds reported | 5 | Mar 19, 2026 | Fact | Form ADV |
| Private funds reported | 5 | Mar 19, 2026 | Fact | Form ADV |
| Private funds reported | 6 | Mar 26, 2024 | Fact | Form ADV |
| Private fund gross assets (reported) | $1.9B | Mar 19, 2026 | Fact | Form ADV |
| Private fund gross assets (reported) | $1.9B | Mar 19, 2026 | Fact | Form ADV |
| Private fund gross assets (reported) | $2.4B | Mar 26, 2024 | Fact | Form ADV |
| Schedule a diff | sadiff-1 | Mar 19, 2026 | Fact | Form ADV |
| Stated geography | boston “geography words on the home page” | Sep 16, 2026 | Fact | |
| Stated geography | boston “geography words on the home page” | Sep 14, 2026 | Fact | |
| Stated sectors | biotech “sector words on the home page” | Sep 16, 2026 | Fact | |
| Stated sectors | biotech “sector words on the home page” | Sep 14, 2026 | Fact | |
| Team page | Sep 16, 2026 | Fact | ||
| Team page | Sep 14, 2026 | Fact | ||
| Venture funds reported | 5 | Mar 19, 2026 | Fact | Form ADV |
| Venture funds reported | 5 | Mar 19, 2026 | Fact | Form ADV |
| Venture funds reported | 6 | Mar 26, 2024 | Fact | Form ADV |
| Website | Mar 19, 2026 | Fact | Form ADV | |
| Website | Mar 26, 2024 | Fact | Form ADV | |
| Site title | Sep 16, 2026 | Fact | ||
| Site title | Sep 14, 2026 | Fact |
How this is scored
Scores, classification basis and filing advisersInstitutional venture firm, confirmedShowHide
Venture manager, reported GAV $1.9B across 7 vehicles
- importance
- gav: 0.69 · funds: 0.58 · people: 0.36 · investments: 0.22 · co investors: 0.24
- active deployment
- investments 12m: 0 · fund raising 18m: 1 · people joined 12m: 0 · vintage within 3y: 0 · latest investment at: not scored
- emerging manager
- fund count: 7 · reported gav: $1.9B · first adv filing: 2012-03-28 · years since first filing: 14.5
Fits, record history and connections
scored matches for this investor, every identity change, every edge
Fits
- score 36.7confidence 100%Why: sector fit; geography fit; activity; analogousWatch: adjacent portfolio
- score 36.7confidence 100%Why: sector fit; geography fit; activity; analogousWatch: adjacent portfolio
Scored by DFX match engines from the record's observed portfolio, stage, geography and recent activity. A fit is a reason to look, not a mandate; the blockers say what the model could not confirm. Names and the evidence sentences show with the names on this page.
Record history
- Adviser's first ADV filing2012-03-28source on record
The ledger records every merge, rename and reclassification this record went through and the dated filings observed on it, so the identity on this page can be traced to the records it was built from. The ledger's own sentences name other records, so they show with the names.