COAG insider buying and SEC filings, explained
Hemab Therapeutics Holdings, Inc. · CIK 2114044
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Insider activity in the last 12 months
Bought
$55.5M
Insiders who bought
1
Sold (not marked 10b5-1)
$0
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Jun 15–16, 2026 | Purchase (code P) | Peter Kolchinsky (10% owner) bought 67,669 shares indirectly between Jun 15 and Jun 16 at about $24.97 ($1.7M), reported as a purchase (code P). Indirect holdings up 1% to 6,444,637 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 3 other reporting owners. | SEC filing Filed Jun 17, 2026 |
| May 19–20, 2026 | Purchase (code P) | Peter Kolchinsky (10% owner) bought 4,798 shares indirectly between May 19 and May 20 at about $24.96 ($120K), reported as a purchase (code P). Indirect holdings up <1% to 6,376,968 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 3 other reporting owners. | SEC filing Filed May 21, 2026 |
| May 12, 2026 | Purchase (code P) | Peter Kolchinsky (10% owner) bought 6,387 shares indirectly at about $24.90 ($159K), reported as a purchase (code P). Indirect holdings up <1% to 6,372,170 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 3 other reporting owners. | SEC filing Filed May 14, 2026 |
| May 7–11, 2026 | Purchase (code P) | Peter Kolchinsky (10% owner) bought 51,258 shares indirectly between May 7 and May 11 at about $24.75 ($1.3M), reported as a purchase (code P). Indirect holdings up 1% to 6,365,783 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 3 other reporting owners. | SEC filing Filed May 11, 2026 |
| May 4–6, 2026 | Purchase (code P) | Peter Kolchinsky (Director and 10% owner) bought 2,840,429 shares indirectly between May 4 and May 6 at about $18.39 ($52.2M), reported as a purchase (code P). Indirect holdings up 82% to 6,314,525 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 5 other reporting owners. | SEC filing Filed May 6, 2026 |
6 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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