Insider Transactions Reported by 19 Insiders of Codiak BioSciences, Inc.

Location: Cambridge, MA

Quick Takeaways

Codiak BioSciences, Inc. has 19 insiders with reported activity on this page.
No net insider buy/sell flow is currently reported for the last year.
Recent transaction rows are not currently available.

What Changed

No meaningful buy/sell imbalance is currently visible in the one-year window.
Activity will update as new Forms 3/4/5 are filed.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Source Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 16 Apr 2025.

Buys

Shares: 0

Insiders: 0

Sells

Shares: 0

Insiders: 0

Net

Shares: 0

Insiders: 0

Window (months)	Buy $	Sell $	Net $
0-3	$0	$0	$0
3-6	$0	$0	$0
6-9	$0	$0	$0
9-12	$0	$0	$0

Codiak BioSciences, Inc. executives and other stock owners filed with the SEC include:

Name	Relationship	Valuation	Report Date
Douglas E. Williams	President & CEO, Director	Mixed	28 Mar 2023
ARCH Venture Fund VIII, L.P.	10%+ Owner	Mixed	13 Sep 2022
Flagship Ventures Fund V General Partner LLC	10%+ Owner	Mixed	15 Sep 2022
Steven Gillis	Director	Mixed	16 Feb 2023
Anne-Virginie Eggimann	Director	Mixed	17 Jun 2022
Linda Bain	Chief Financial Officer	Mixed	28 Mar 2023
David J. Mauro	Chief Medical Officer	Mixed	24 Jan 2023
Karen Bernstein	Director	Mixed	16 Feb 2023
Jennifer J. Wheler	Chief Medical Officer	Mixed	10 May 2021
Sriram Sathyanarayanan	Chief Scientific Officer	Mixed	29 Mar 2023
Jason Haddock	Director	Mixed	16 Feb 2023
Arundathy N. Pandite	Director	Mixed	17 Jun 2022
Konstantin Konstantinov	Chief Technology Officer	Mixed	28 Mar 2023
Kyriazi Theo Melas	Director	Mixed	16 Feb 2023
Benny Sorensen	Former SVP, Clinical Development	Mixed	08 Jun 2021
Nicole Barna	Senior Vice President, Human Resources	Mixed	29 Mar 2023
Yalonda Howze	Executive Vice President, Chief Legal and Compliance Officer and Corporate Secretary	Mixed	30 Mar 2023
Richard Brudnick	Officer title: Chief Business Officer and Head of Corporate Strategy	Mixed	16 Feb 2022
COONEY CHARLES L	Director	Mixed	16 Feb 2023

Top shareholders of Codiak BioSciences, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
ARCH Venture Fund VIII, L.P.	3/4/5	10%+ Owner	— mixed-class rows	13,854,098 mixed-class rows	—	—	13 Sep 2022	3/4/5
Flagship Ventures Fund V General Partner LLC	3/4/5	10%+ Owner	— mixed-class rows	4,473,969 mixed-class rows	—	—	15 Sep 2022	3/4/5
David J. Mauro	3/4/5	Chief Medical Officer	— class O/S missing	190,000	—	—	24 Jan 2023	3/4/5
Jennifer J. Wheler	3/4/5	Chief Medical Officer	— class O/S missing	100,000	—	—	10 May 2021	3/4/5
Benny Sorensen	3/4/5	Former SVP, Clinical Development	— class O/S missing	87,411	—	—	08 Jun 2021	3/4/5
Richard Brudnick	3/4/5	Officer title: Chief Business Officer and Head of Corporate Strategy	— mixed-class rows	27,125 mixed-class rows	—	—	16 Feb 2022	3/4/5
Kyriazi Theo Melas	3/4/5	Director	— class O/S missing	15,350	—	—	16 Feb 2023	3/4/5
Anne-Virginie Eggimann	3/4/5	Director	— mixed-class rows	9,000 mixed-class rows	—	—	17 Jun 2022	3/4/5
Arundathy N. Pandite	3/4/5	Director	— mixed-class rows	9,000 mixed-class rows	—	—	17 Jun 2022	3/4/5
COONEY CHARLES L	3/4/5	Director	— class O/S missing	8,750	—	—	16 Feb 2023	3/4/5
Jason Haddock	3/4/5	Director	— class O/S missing	8,750	—	—	16 Feb 2023	3/4/5
Karen Bernstein	3/4/5	Director	— class O/S missing	8,750	—	—	16 Feb 2023	3/4/5
Steven Gillis	3/4/5	Director	— class O/S missing	8,750	—	—	16 Feb 2023	3/4/5
Douglas E. Williams	3/4/5	President & CEO, Director	— class O/S missing	7,655	—	—	28 Mar 2023	3/4/5
Yalonda Howze	3/4/5	Executive Vice President, Chief Legal and Compliance Officer and Corporate Secretary	— class O/S missing	7,458	—	—	30 Mar 2023	3/4/5
Nicole Barna	3/4/5	Senior Vice President, Human Resources	— class O/S missing	4,849	—	—	29 Mar 2023	3/4/5

Recent Insider Transactions by Companies or Individuals for Codiak BioSciences, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
No insider transactions were found in the last 12 months for this issuer.

* An asterisk sign (*) next to the price indicates that the price is likely invalid.