DFX Intelligence

David Grayzel

Partnerat Atlas Venture· MA

As of 2026-10-01 · this person's identity; each section below carries its own date

Current roles: 1
Investments attributed: 2
Board seats: 3

Ask DFX about this View relationships Find contacts Investments Board seats

As of 2026-10-01 · this person's identity; each section below carries its own date

4 additional roles and seats, 1 verified contact (1 professional url)

Every relationship, signal and contact on this record, with the source on each.

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What matters now

3 boards
seats on record
Sits on 3 boards on record, the latest Triana Biomedicines on 4 Dec 2025.
Board seats show where this partner holds governance, not only a cheque.
FactForm D directors and board-seat attributionsFor Founders, co-investorsBoard seats →

Relationship network

12 connected entities2 observed investment recordsinvestment records 2011 to 2012

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.

Some relationships on this record are counted rather than named here. They open with the full profile.

Click any name or line for the investment records and sources behind it. Line weight is investment records together; dashed lines are inferred.

Reading the network

Organization
Company
Fund or vehicle

›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.

Ask DFX about this network

Which companies and boards is David Grayzel connected to?

How am I connected?

Name your firm, a company or a person, and DFX finds the published routes to David Grayzel: 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 David Grayzel

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Drawing the relationship network…

Roles

1 current, 1 past

Atlas Venture Partner
? to present · “team page: David Grayzel / Partner”
Fact Firm website
Atlas Venture Life Science Advisors, LLC Member
Nov 1, 2014 to Mar 31, 2026 · “Schedule A: GRAYZEL, DAVID, MEMBER, since 11/2014, ownership B, control person Y”
Fact Form ADV

Investments attributed to this person

Company	Round	Investor	Attribution	Date	Source
Annovation BioPharma, Inc.	Form D equity offering · $2.0M	Atlas Venture	strongly supported · board	Jul 25, 2012	Inference sec.gov
Annovation BioPharma, Inc.	Form D equity offering · $375,000	Atlas Venture	strongly supported	May 17, 2011	Inference sec.gov

Board seats and vehicles

3 boards, 7 vehicles

Triana Biomedicines, Inc. Director Dec 4, 2025 Fact
Affinia Therapeutics Inc. Director Oct 14, 2025 Fact
Annovation BioPharma, Inc. board seat on a deal Jul 25, 2012 Inference
Atlas Venture Fund X, L.P. Executive Officer Dec 18, 2014
Atlas Venture Fund Xi, L.P. Executive Officer Jun 30, 2017
Atlas Venture Opportunity Fund 1, L.P. Executive Officer Nov 29, 2018

Timeline

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

Mar 31, 2026
David Grayzel (Member) no longer on Schedule A of Atlas Venture Life Science Advisors, LLC
Person left Inference Atlas Venture Life Science Advisors, LLC Form ADV
Mar 31, 2026
Left Atlas Venture Life Science Advisors, LLC as Member
Role ended Fact Atlas Venture Life Science Advisors, LLC Form ADV
Nov 1, 2014
Joined Atlas Venture Life Science Advisors, LLC as Member
Role began Fact Atlas Venture Life Science Advisors, LLC Form ADV
Jul 25, 2012
Form D equity offering in Annovation BioPharma, Inc. (Atlas Venture)
Attributed investment Inference Annovation BioPharma, Inc. Form D
May 17, 2011
Form D equity offering in Annovation BioPharma, Inc. (Atlas Venture)
Attributed investment Inference Annovation BioPharma, Inc. Form D

Record history

1 dated event on the change ledger, latest event first

Person left
2026-03-31source 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.