DFX Intelligence
Third Rock Ventures VI, L.P.
As of · the latest observation of this vehicle; each figure below carries its own filing date
Active deploymentClosed to new capitalADV: Venture Capital Fund
As of · the latest observation of this vehicle; each figure below carries its own filing date
7 additional principals, 3 additional placement agents
Every relationship, signal and contact on this record, with the source on each.
Includes 3 days of DFX Intelligence. Then $199/month unless canceled.
What matters now
- -29%reported GAV
Reported gross assets fell from $1.11B to $787M between the Form ADV filings of 26 Mar 2024 and 19 Mar 2026.
The fund's assets as the adviser swears them, never its size or dry powder.
Drawing the relationship network…
Amounts, each with its basis
- Vintage
- 2022basis: form d first sale
- Target
- unknownnot announced
- First close
- unknownnever inferred from a Form D
- Final close
- unknownonly from an announcement or an LP disclosure
- Announced size
- unknown
- Form D offering
- $1.1Bwhat may be sold, not what was raised; file 021-448880, sworn by the adviser or filed under this vehicle
- Form D sold
- $1.1Bas of the filing of Jun 10, 2022, 65 investors
- First sale
- May 26, 2022
- Reported GAV
- $787Mon the Form ADV filed Mar 19, 2026; the fund's assets, never its size or dry powder
- Owners (ADV)
- 66
- Reported on ADV
- Mar 29, 2023 to Mar 19, 2026
Fundraising evidence
What counts as raisingA Form D offering is permission to sell, not a fund in market; an amount sold is never a close; an evergreen offering amended every year is not a raise.Closed to new capital
Form D filed or amended 2022-06-10: the stated $1.1bn offering reported fully sold (fr-1)
evidence dated Jun 10, 2022.
Lifecycle
Active deployment
Lifecycle
vintage 2 to 4 years
age years: 4first sale: May 26, 2022vintage year: 2022adv gav as of: Mar 19, 2026vintage basis: Form d first saleform d sold: $1.1Bform d offering: $1.1Bform d latest filed at: Jun 10, 2022
The fund's own reporting through time
3 Form ADV filings
| Filed | Type | Gross asset value | Owners | Min. investment | Adviser-owned | Audit | |
|---|---|---|---|---|---|---|---|
| Mar 29, 2023 | Venture Capital Fund | $1.1B | 66 | $500,000 | 2% | yes | |
| Mar 26, 2024 | Venture Capital Fund | $1.1B | 66 | $500,000 | 2% | yes | |
| Mar 19, 2026 | Venture Capital Fund | $787M | 66 | $500,000 | 2% |
Principals and agents
10 principals on Form D, 0 placement agents
- Third Rock Ventures GP VI, L.P. Executive Officer
- Abbie Celniker Executive Officer
- Cary Pfeffer Executive Officer
Service providers
6 named on Form ADV Schedule D and Form D
- AuditorMAYER HOFFMAN MCCANN P.C. · BOSTON, Massachusetts, United StatesForm ADV filed Mar 19, 2026 reports.adviserinfo.sec.gov
- CustodianCITIZENS BANK, NATIONAL ASSOCIATION · PROVIDENCE, Rhode Island, United StatesForm ADV filed Mar 19, 2026 reports.adviserinfo.sec.gov
- CustodianJPMorgan · NEW YORK, New York, United StatesForm ADV filed Mar 19, 2026 reports.adviserinfo.sec.gov
Limited partners and their reported performance
Whose numbers these areEach row is the LP’s own number: its cash flows and its valuation policy as of its reporting date, not the fund’s. Net IRR is printed only when the LP prints one. The vintage is the LP’s definition (CalPERS: year of its first cash flow; WSIB: year of its initial investment).0 public LP reports
No public LP has reported this vehicle. The LP tape is read from public pension disclosures (see Limited partners); a fund appears here only when an LP’s report names it.
Known LPs and allocators
What these amounts and dates areA commitment date prints only when the source printed one; otherwise the row carries the date of the report that listed it. A foundation’s 990-PF line is a holding at fair value on its return, never a commitment.2 relationships, public pensions and the allocator graph, each counted once
| Allocator | Type | Amount | Date | Source |
|---|---|---|---|---|
| Hess Philanthropic Fund | FOUNDATION | $949,933 fair value on the foundation's return | reported as of Nov 30, 2025 | Fact IRS Form 990 / 990-PF e-file returns |
| Klarman Family Foundation | FOUNDATION | $1.4M fair value on the foundation's return | reported as of Dec 31, 2024 | Fact IRS Form 990 / 990-PF e-file returns |
Investments attributed to this vehicle
0
No investment attributed to this vehicle. The firm’s investments sit on the firm; a fund gets one only when a source names the vehicle.
Timeline
2 events
- Mar 29, 2023Third Rock Ventures VI, L.P. first reported on Form ADV by Third Rock Ventures, LLC. (Venture Capital Fund), GAV $1,112,827,403Fund first reported on Form ADV Fact Form ADV
- Jun 10, 2022Third Rock Ventures VI, L.P. filed Form D: $1,105,340,000 sold of $1,105,340,000, Venture Capital FundForm D filed Fact Form D
Evidence
16 observations
Every observation on this vehicle
- Entity type: Limited Partnership Jun 10, 2022 Fact Form D
- Form D fund type: Venture Capital Fund Jun 10, 2022 Fact Form D
- Form D industry group: Pooled Investment Fund Jun 10, 2022 Fact Form D
- Amendment: false Jun 10, 2022 Fact Form D
- Revenue range (Form D): Not Applicable Jun 10, 2022 Fact Form D
- Incorporated: withinFiveYears Jun 10, 2022 Fact Form D
- Jurisdiction: Delaware Jun 10, 2022 Fact Form D
- Amount sold (Form D): $1.1B Jun 10, 2022 Fact Form D
- Offering amount (Form D): $1.1B Jun 10, 2022 Fact Form D
- Exemptions: 06b, 3C, 3C.7 Jun 10, 2022 Fact Form D
- First sale: 2022-05-26 Jun 10, 2022 Fact Form D
- Investors (Form D): 65 Jun 10, 2022 Fact Form D
- Minimum investment (Form D): 500,000 Jun 10, 2022 Fact Form D
- Securities offered: pooled Jun 10, 2022 Fact Form D
- Office address: Jun 10, 2022 Fact Form D
- Year of incorporation: 2022 Jun 10, 2022 Fact Form D
Relationships across DFX
on 2 other DFX graphs
Across the graphs
Third Rock Ventures VI, L.P. is the same institution as 2 records in RIA and Wealth and Allocators.
RIA and Wealth1Allocators1
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…
Record history
2 dated events on the change ledger, latest event first
- Fund first reported on ADV2023-03-29source on record
- Form D filed2022-06-10source 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.