COAG · Insider trading · 13F holders · Congress trades
Hemab Therapeutics Holdings Inc (COAG)
Who is buying and selling COAG: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 8
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
COAG at a glance
- No open-market insider purchases or sales of COAG were filed in the last 90 days.
- 8 13F filers hold COAG among their 50 largest positions, worth $803.5M combined, including Peter Kolchinsky and Behzad Aghazadeh. The biggest bets by portfolio weight are Novo Holdings A/s (8.9%), Bain Capital Life Sciences Investors, LLC (3.6%) and Peter Kolchinsky (2.5%). In their latest 13Fs, 3 managers opened a new position and 0 added to one.
- No member of Congress has disclosed a trade in COAG.
COAG insider trading
No open-market insider purchases or sales of COAG were filed in the last 90 days.
Who owns COAG? Hedge funds and superinvestors
8 13F filers hold COAG among their 50 largest positions, worth $803.5M combined, including Peter Kolchinsky and Behzad Aghazadeh. The biggest bets by portfolio weight are Novo Holdings A/s (8.9%), Bain Capital Life Sciences Investors, LLC (3.6%) and Peter Kolchinsky (2.5%). In their latest 13Fs, 3 managers opened a new position and 0 added to one.
Superinvestors holding COAG: Peter Kolchinsky 2.5% · Behzad Aghazadeh 0.6%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Peter KolchinskyHedge fund | 2.5% | $286.8M | 7,808,627 | — | Q2 2026 |
| Novo Holdings A/sInvestment manager | 8.9% | $153.6M | 4,180,550 | New | Q2 2026 |
| Deep Track Capital, LPHedge fund | 1.9% | $132.3M | 3,602,093 | — | Q2 2026 |
| Siren, L.L.C.Investment manager | 1.6% | $76.6M | 2,086,834 | — | Q2 2026 |
| Behzad AghazadehHedge fund | 0.6% | $70.7M | 1,925,150 | New | Q2 2026 |
| Bain Capital Life Sciences Investors, LLCAsset manager | 3.6% | $60.6M | 1,650,000 | New | Q2 2026 |
| Rock Springs Capital Management LPHedge fund | 1.0% | $21.1M | 575,432 | — | Q2 2026 |
| Opaleye Management Inc.Hedge fund | 0.2% | $1.8M | 47,652 | — | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 8). Screen COAG in the grand portfolio →
COAG stock trades by members of Congress
No member of Congress has disclosed a trade in COAG.
COAG questions and answers
Are insiders buying COAG stock?
No open-market insider purchases or sales of COAG were filed in the last 90 days.
Which hedge funds own COAG?
8 13F filers hold COAG among their 50 largest positions, worth $803.5M combined, including Peter Kolchinsky and Behzad Aghazadeh. The biggest bets by portfolio weight are Novo Holdings A/s (8.9%), Bain Capital Life Sciences Investors, LLC (3.6%) and Peter Kolchinsky (2.5%). In their latest 13Fs, 3 managers opened a new position and 0 added to one.
Has Congress traded COAG?
No member of Congress has disclosed a trade in COAG.
Who is the largest holder of COAG?
Among 13F filers, Peter Kolchinsky reports the largest COAG position, $286.8M (7,808,627 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Novo Holdings A/s's: 8.9% of its portfolio.
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