Atlas Venture Associates XI, L.P.

CIK 1780068 · last filed 2024-02-20

Atlas Venture Associates XI, L.P. is a corporate insider who has filed 13 SEC Form 4 insider transactions across 1 company since 2020. The most recent filing, for DYN, was dated May 6, 2026. Across all open-market trades the lifetime net is −$35.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $345.1M 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.

Disclosed Exposure

$345.12M

Companies

1

Total Filings

13

Lifetime Open-Market Net

-$35.60M

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
DYN	10%+ Owner	14,959,605	$23.07	$345.12M	-$35.60M	2	2024-02-20

Recent Filings

13 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
2026-05-06	DYN	Notice (144)	−428	-$7.5K	EDGAR
2026-05-05	DYN	Notice (144)	−60	-$1.1K	EDGAR
2026-05-04	DYN	Notice (144)	−61	-$1.1K	EDGAR
2026-04-28	DYN	Notice (144)	−1,171	-$21.1K	EDGAR
2026-04-27	DYN	Notice (144)	−894	-$16.3K	EDGAR
2026-04-24	DYN	Notice (144)	−710	-$13.4K	EDGAR
2026-04-23	DYN	Notice (144)	−377	-$7.4K	EDGAR
2026-04-22	DYN	Notice (144)	−1,485	-$28.5K	EDGAR
2026-04-21	DYN	Notice (144)	−1,413	-$28.3K	EDGAR
2026-04-20	DYN	Notice (144)	−1,401	-$28.6K	EDGAR

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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.