Atlas Venture Fund XII, L.P.

CIK 1812049 · last filed 2025-08-07

Atlas Venture Fund XII, L.P. is a corporate insider who has filed 4 SEC Form 4 insider transactions across 2 companies since 2022. Across all open-market trades the lifetime net is +$44.9M, making them a net buyer over the disclosed history.

"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

$0

Companies

2

Total Filings

4

Lifetime Open-Market Net

$44.94M

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
Jade Biosciences, Inc. (AVTE) Delisted 10%+ Owner 2,327,909 $93.80 $218.36M $0 2 2022-07-19
Vigil Neuroscience, Inc. (VIGL) Delisted 10%+ Owner 4,808,896 $8.05 $38.71M $44.94M 1 2022-01-11

Recent Filings

4 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2025-08-07 Disp (D) −35,021,244 $0
2022-07-19 Jade Biosciences, Inc. (AVTE) Delisted Other (J) −310,388 $0 EDGAR
2022-04-04 Jade Biosciences, Inc. (AVTE) Delisted Other (J) −465,582 $0 EDGAR
2022-01-11 Vigil Neuroscience, Inc. (VIGL) Delisted Mixed +26,366,988 $44.94M EDGAR
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.