Insider · CIK 0001780068
Atlas Venture Associates XI, L.P.
Files at DYN (Dyne Therapeutics, Inc.), XLO (Xilio Therapeutics, Inc.), SION (Sionna Therapeutics, Inc.). First filing -, latest -.
In brief
Atlas Venture Associates XI, L.P. files SEC Form 4 as 10% owner at DYN (Dyne Therapeutics, Inc.), and also at XLO (Xilio Therapeutics, Inc.), SION (Sionna Therapeutics, Inc.). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.
A track record needs three past buys with six months of prices behind them; Atlas Venture Associates XI, L.P. has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Jul 7, 2026 | DYN Dyne Therapeutics, Inc. | 5,000 0.00% of outstanding | $114k | Jul 7, 2026 | none |
| May 6, 2026 | DYN Dyne Therapeutics, Inc. | 428 0.00% of outstanding | $7,477 | May 6, 2026 | none |
| May 5, 2026 | DYN Dyne Therapeutics, Inc. | 60 0.00% of outstanding | $1,063 | May 5, 2026 | none |
| May 4, 2026 | DYN Dyne Therapeutics, Inc. | 61 0.00% of outstanding | $1,061 | Apr 29, 2026 | none |
| Apr 28, 2026 | DYN Dyne Therapeutics, Inc. | 1,171 0.00% of outstanding | $21k | Apr 28, 2026 | none |
| Apr 27, 2026 | DYN Dyne Therapeutics, Inc. | 894 0.00% of outstanding | $16k | Apr 27, 2026 | none |
| Apr 24, 2026 | DYN Dyne Therapeutics, Inc. | 710 0.00% of outstanding | $13k | Apr 24, 2026 | none |
| Apr 23, 2026 | DYN Dyne Therapeutics, Inc. | 377 0.00% of outstanding | $7,416 | Apr 23, 2026 | none |
| Apr 22, 2026 | DYN Dyne Therapeutics, Inc. | 1,485 0.00% of outstanding | $29k | Apr 22, 2026 | none |
| Apr 21, 2026 | DYN Dyne Therapeutics, Inc. | 1,413 0.00% of outstanding | $28k | Apr 21, 2026 | $5.5M |
| Apr 20, 2026 | DYN Dyne Therapeutics, Inc. | 1,401 0.00% of outstanding | $29k | Apr 20, 2026 | none |
Transactions
Every row this insider has filed, 0 in all, newest first.
Questions about Atlas Venture Associates XI, L.P.
Answered from the filings on this page, as of the latest one.
Is Atlas Venture Associates XI, L.P. buying or selling?
Atlas Venture Associates XI, L.P. has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did Atlas Venture Associates XI, L.P.'s past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Atlas Venture Associates XI, L.P. has 0.
Where does Atlas Venture Associates XI, L.P. file Form 4?
Atlas Venture Associates XI, L.P. has filed Form 4 at DYN (Dyne Therapeutics, Inc.); XLO (Xilio Therapeutics, Inc.); SION (Sionna Therapeutics, Inc.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.