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Atlas Venture Fund XI, L.P.

CIK 1708269 · last filed 2024-11-05

Atlas Venture Fund XI, L.P. is a corporate insider who has filed 45 SEC Form 4 insider transactions across 5 companies since 2020. The most recent filing, for DYN, was dated Jul 7, 2026. Across all open-market trades the lifetime net is +$9.7M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $194.1M across reported positions.

"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.

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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

45 filings
Insider 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
2026-07-07 DYN Notice (144) −153,966 -$3.52M EDGAR
2026-07-06 DYN Notice (144) −253,039 -$5.84M EDGAR
2026-07-06 KRRO Notice (144) −817 -$11.4K EDGAR
2026-07-02 KRRO Notice (144) −85,955 -$1.17M EDGAR
2026-06-29 DYN Notice (144) −102,969 -$2.16M EDGAR
2026-06-26 DYN Notice (144) −162,954 -$3.36M EDGAR
2026-06-25 DYN Notice (144) −12,699 -$258.2K EDGAR
2026-06-24 KRRO Notice (144) −41,345 -$566.8K EDGAR
2026-06-24 DYN Notice (144) −50,530 -$1.02M EDGAR
2026-06-23 DYN Notice (144) −77,855 -$1.62M EDGAR
Showing 1–10 of 45
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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.