DFX Intelligence

Jeff K Tong

Manager/Memberat Third Rock Ventures, LLC.· MA

As of 2026-09-23 · this person's identity; each section below carries its own date

Current roles: 1
Investments attributed: 0
Board seats: 0

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As of 2026-09-23 · this person's identity; each section below carries its own date

What matters now

2022
since
Manager/Member at Third Rock Ventures, LLC. since 1 Jan 2022.
Tenure says how settled this partner is at the firm.
FactForm ADV Schedule A and the firm's team pageFor Founders, LPsRoles →

Relationship network

1 connected entity

From the roles sources name this person in, the investments a source attributes to them, and the boards and funds Form D names them on.

Jeff K Tong

Manager/Member

Reading the network

Organization

›How strength and recency are read

Venture relationships are not scored. Each line names its claim: a round led or joined, a board seat or a filing that names the firm, a listing on a portfolio page (dated by when DFX saw it, never by when the investment was made), a disclosed LP commitment, or a co-investor pair counted from observed participations. Observed means a named source says so; Derived means DFX counted it from observed rows; Inferred means a match that may be wrong.

Darker lines were active in the last 24 months or are current; lighter lines are older or undated.

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Which companies and boards is Jeff K Tong connected to?

How am I connected?

Name your firm, a company or a person, and DFX finds the published routes to Jeff K Tong: 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.

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Drawing the relationship network…

Roles

1 current, 0 past

Third Rock Ventures, LLC. Manager/Member
Jan 1, 2022 to present · “Schedule A: TONG, JEFFREY, K, MANAGER/MEMBER, since 01/2022, ownership F, control person Y”
Fact Form ADV

Investments attributed to this person

No investment attributed yet. Attribution needs a source naming this person on the deal: a quote, a board seat, a portfolio page credit.

Board seats and vehicles

0 boards, 0 vehicles

None on record.

Timeline

2 dated entries: events, attributed deals, board seats and role changes

Jan 1, 2022
Joined Third Rock Ventures, LLC. as Manager/Member
Role began Fact Third Rock Ventures, LLC. Form ADV
May 1, 2019
Jeff K Tong joined Schedule A of Third Rock Ventures, LLC. as Executive Officer
Person joined Fact Third Rock Ventures, LLC. Form ADV

Record history

1 dated event on the change ledger, latest event first

Person joined
2019-05-01source 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.