🕵️ Q32 BIO Inc. ($QTTB)

SEC insider & ownership activity, last 12 months · CIK 1661998 · every row links its SEC filing

Over the last 12 months insiders sold $460K against $30.0M of open-market buying. Orbimed Advisors LLC bought $15.0M in discretionary trades (May). No red-flag 8-Ks in the window.

Oct 2025: net +$0 Nov 2025: net +$0 Dec 2025: net -$109K Jan 2026: net +$0 Feb 2026: net -$75K Mar 2026: net +$0 Apr 2026: net +$0 May 2026: net +$30.0M Jun 2026: net +$0 Jul 2026: net +$0 Aug 2026: net -$275K Sep 2026: net +$0
Monthly net open-market insider flow, last 12 months (up = net buying)

Insider flow

2 buyers, $30.0M (4 lots) · 3 sellers, $460K (8 lots)

InsiderBuysBoughtSellsSoldLast
Orbimed Advisors LLC2$15.0M 0–May 28, 2026
Xu Diyong2$15.0M 0–May 28, 2026
Jodie Morrison0– 3$286KAug 25, 2026
Lee Kalowski0– 3$115KAug 25, 2026
Shelia M. Violette0– 2$59KAug 25, 2026

5%+ holders

HolderStakeClassScheduleEvent
Orbimed Advisors LLC 13.9% 13DJul 16, 2026 filing ↗
Boxer Capital Management, LLC 13.3% 13GJul 10, 2026 filing ↗
Boxer Holdings, LP 13.3% 13GJul 10, 2026 filing ↗
Boxer Holdings GP, LLC 13.3% 13GJul 10, 2026 filing ↗
Aaron Davis 13.3% 13GJul 10, 2026 filing ↗
Orbimed Capital GP VII LLC 11.8% 13DJul 16, 2026 filing ↗
BVF Partners L P/IL 10.0% 13GJun 4, 2026 filing ↗
BVF INC/IL 10.0% 13GJun 4, 2026 filing ↗
Mark N. Lampert 10.0% 13GJun 4, 2026 filing ↗
RA Capital Management, L.P. 9.8% 13GJun 4, 2026 filing ↗
Peter Kolchinsky 9.8% 13GJun 4, 2026 filing ↗
Rajeev Shah 9.8% 13GJun 4, 2026 filing ↗
RA Capital Healthcare Fund, L.P. 9.8% 13GJun 4, 2026 filing ↗
BVF GP Holdings LLC 9.2% 13GJun 4, 2026 filing ↗
Opaleye Management Inc. 5.5% 13GJul 31, 2026 filing ↗
Opaleye, L.P. 5.5% 13GJul 31, 2026 filing ↗
James Silverman 5.5% 13GJul 31, 2026 filing ↗
Biotechnology Value Fund L P 5.3% 13GJun 4, 2026 filing ↗
BVF I GP LLC 5.3% 13GJun 4, 2026 filing ↗

Planned insider sales (Form 144)

SellerPlannedApprox. sale date
Jodie Morrison$78KDec 2, 2025 filing ↗
Lee Kalowski$31KDec 2, 2025 filing ↗

Material events (8-K)

ItemEvent date
Reg FD disclosure (7.01)Sep 14, 2026 filing ↗
Other events (8.01)Sep 14, 2026 filing ↗
Financial Statements and Exhibits (9.01)Sep 14, 2026 filing ↗
Earnings (2.02)Aug 5, 2026 filing ↗
Financial Statements and Exhibits (9.01)Aug 5, 2026 filing ↗
Material agreement (1.01)Jul 14, 2026 filing ↗
Financial Statements and Exhibits (9.01)Jul 14, 2026 filing ↗
Other events (8.01)Jul 13, 2026 filing ↗
Financial Statements and Exhibits (9.01)Jul 13, 2026 filing ↗
Reg FD disclosure (7.01)Jul 13, 2026 filing ↗
Other events (8.01)Jul 13, 2026 filing ↗
Financial Statements and Exhibits (9.01)Jul 13, 2026 filing ↗
Shareholder vote (5.07)Jun 12, 2026 filing ↗
Material agreement (1.01)May 26, 2026 filing ↗
Unregistered equity sale (3.02)May 26, 2026 filing ↗
Other events (8.01)May 26, 2026 filing ↗
Financial Statements and Exhibits (9.01)May 26, 2026 filing ↗
Earnings (2.02)May 5, 2026 filing ↗
Financial Statements and Exhibits (9.01)May 5, 2026 filing ↗
Other events (8.01)Apr 24, 2026 filing ↗
Financial Statements and Exhibits (9.01)Apr 24, 2026 filing ↗
Material agreement (1.01)Mar 27, 2026 filing ↗
Financial Statements and Exhibits (9.01)Mar 27, 2026 filing ↗
Earnings (2.02)Mar 10, 2026 filing ↗
Financial Statements and Exhibits (9.01)Mar 10, 2026 filing ↗
Material agreement (1.01)Feb 17, 2026 filing ↗
Other events (8.01)Feb 17, 2026 filing ↗
Financial Statements and Exhibits (9.01)Feb 17, 2026 filing ↗
Officer/director changes (5.02)Dec 17, 2025 filing ↗
Material agreement (1.01)Nov 28, 2025 filing ↗