SEC reporting owner

Atlas Venture Fund X, L.P. SEC insider disclosures

Explore Atlas Venture Fund X, L.P.'s reporting-owner identity, issuer relationships, purchases, sales and SEC filing receipts.

As of 2026-10-07T00:29:11.873Z

Reporting owner CIK
0001628098
Issuers
8
Coverage
verified

Issuer relationships

A reporting-owner CIK identifies the filer across issuer relationships and name aliases. A filer may be an individual or an organization; the filing role is the relevant evidence.

AVROBIO, Inc.0001681087AVRONoNo
Magenta Therapeutics, Inc.0001690585MGTANoNo
Replimune Group, Inc.0001737953REPLNoNo
Generation Bio Co.0001733294GBIONoNo
Kymera Therapeutics, Inc.0001815442KYMRNoNo
Disc Medicine, Inc.0001816736GMTX, IRONNoNo
Ikena Oncology, Inc.0001835579IKNANoNo
Q32 Bio Inc.0001661998QTTBNoNo

Recent SEC transactions

Code P identifies a purchase, S a sale and A an award. Awards and open-market purchases describe different events. Use the public availability date when deciding when a researcher could have known about the transaction.

No records are available for this view.

Up to 50 transactions from the recent two-year owner window.

Source evidence and strategy eligibility

The transactions below come from filings; a historical tracker separately simulates following eligible events. Joint filers can report the same transaction, and an owner can have filings at multiple companies. Public availability, amendment lineage and verified coverage determine which events a historical tracker may use.

The current directory marks this owner's filing coverage verified.