Atlas Venture Fund XI, L.P.
CIK 1708269 · last filed 2024-11-05
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Loading insider history…
Disclosed Exposure
$194.14M
Companies
5
Total Filings
45
Lifetime Open-Market Net
$9.69M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| Third Harmonic Bio, Inc. (THRD) Delisted | 10%+ Owner | 9,798,075 | $5.38 | $52.71M | $0 | 1 | 2024-11-05 |
| Day One Biopharmaceuticals, Inc. (DAWN) Delisted | 10%+ Owner | 6,008,534 | $21.53 | $129.36M | $0 | 3 | 2022-12-14 |
| ImageneBio, Inc. (IKNA) Delisted | 10%+ Owner | 176,877 | $17.16 | $3.04M | $9.69M | 1 | 2021-12-14 |
| DYN | 10%+ Owner | 7,326,117 | $26.50 | $194.14M | $0 | 1 | 2021-07-15 |
| Akero Therapeutics, Inc. (AKRO) Delisted | 10%+ Owner | 2,706,412 | $54.65 | $147.91M | $0 | 1 | 2020-01-02 |
Recent Filings · Page 3 of 5
45 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-04-21 | DYN | Notice (144) | −143,749 | -$2.88M | EDGAR |
| 2026-04-20 | DYN | Notice (144) | −142,571 | -$2.91M | EDGAR |
| 2025-10-21 | SION | Notice (144) | −73,460 | -$2.37M | EDGAR |
| 2025-10-20 | SION | Notice (144) | −46,273 | -$1.48M | EDGAR |
| 2025-10-17 | SION | Notice (144) | −50,520 | -$1.65M | EDGAR |
| 2025-10-16 | SION | Notice (144) | −139,897 | -$4.32M | EDGAR |
| 2025-10-14 | SION | Notice (144) | −48,130 | -$1.42M | EDGAR |
| 2025-10-10 | SION | Notice (144) | −16,727 | -$474.2K | EDGAR |
| 2025-10-06 | SION | Notice (144) | −9,753 | -$292.7K | EDGAR |
| 2025-10-03 | SION | Notice (144) | −31,198 | -$914.1K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.