Atlas Venture Opportunity Fund II, L.P.
CIK 1885327 · last filed 2025-02-10
"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
$219.22M
Companies
2
Total Filings
48
Lifetime Open-Market Net
-$95.58M
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.
Recent Filings · Page 3 of 5
48 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 |
|---|---|---|---|---|---|
| 2026-04-24 | DYN | Notice (144) | −36,345 | -$686.9K | EDGAR |
| 2026-04-23 | DYN | Notice (144) | −19,261 | -$378.9K | EDGAR |
| 2026-04-22 | DYN | Notice (144) | −75,866 | -$1.46M | EDGAR |
| 2026-04-21 | DYN | Notice (144) | −72,315 | -$1.45M | EDGAR |
| 2026-04-20 | DYN | Notice (144) | −71,722 | -$1.46M | EDGAR |
| 2025-12-17 | IRON | Notice (144) | −213 | -$19.5K | EDGAR |
| 2025-12-16 | IRON | Notice (144) | −5,666 | -$521.3K | EDGAR |
| 2025-12-16 | IRON | Notice (144) | −13,000 | -$1.19M | EDGAR |
| 2025-12-15 | IRON | Notice (144) | −8,009 | -$735.6K | EDGAR |
| 2025-12-15 | IRON | Notice (144) | −8,851 | -$814.3K | 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.