Q32 Bio Inc. (QTTB) Insider Trading

Over the last 3 months, QTTB insiders made 0 open-market buys and 3 sales, a net sale of -$275K (SEC Form 4). Over the last 6 months, 12 institutions increased and 12 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
3
Net (3m)
-$275.1K
Insider trades by month Buys Sells
Aug
Aug
Dec
Feb
Jun
Aug
Context3-month price +28.7%Institutions reducing (13F)
DateInsiderTypeSharesPrice
Aug 27, 2026Violette Shelia M.officer: Chief Scientific OfficerSell2,798$16.56
Aug 27, 2026Morrison Jodie Popedirector, officer: CEOSell9,845$16.56
Aug 27, 2026Kalowski Leeofficer: CFO and PresidentSell3,972$16.56
Jul 21, 2026Iwicki Mark TdirectorGrant10,826$12.64
Jul 21, 2026TZIANABOS ARTHURdirectorGrant10,826$12.64
Jul 21, 2026Lundberg Sven AntedirectorGrant10,826$12.64
Jul 21, 2026LAPORTE KATHLEENdirectorGrant10,826$12.64
Jul 21, 2026Thistle MarydirectorGrant10,826$12.64
Jul 21, 2026GRAYZEL DAVID S.directorGrant10,826$12.64
Jul 21, 2026Manke IsaacdirectorGrant10,826$12.64
Jul 21, 2026Xu Diyongdirector, 10 percent owner: Grant10,826$12.64
Jul 20, 2026Morrison Jodie Popedirector, officer: CEOGrant132,000—
Jul 20, 2026Kalowski Leeofficer: CFO and PresidentGrant53,250—
Jul 20, 2026Violette Shelia M.officer: Chief Scientific OfficerGrant37,500—
Jul 2, 2026Manke IsaacdirectorOption53,521$2.80
Jun 16, 2026LAPORTE KATHLEENdirectorGrant9,810$12.64
Jun 16, 2026TZIANABOS ARTHURdirectorGrant9,810$12.64
Jun 16, 2026GRAYZEL DAVID S.directorGrant9,810$12.64
Jun 16, 2026Thistle MarydirectorGrant9,810$12.64
Jun 16, 2026Xu Diyongdirector, 10 percent owner: Grant9,810$12.64
Jun 16, 2026Lundberg Sven AntedirectorGrant9,810$12.64
Jun 16, 2026Iwicki Mark TdirectorGrant9,810$12.64
Jun 16, 2026Manke IsaacdirectorGrant9,810$12.64
Jun 1, 2026ORBIMED ADVISORS LLCdirector, 10 percent owner: Buy1,250,000$8.00
Jun 1, 2026ORBIMED ADVISORS LLCdirector, 10 percent owner: Buy625,000$8.00
Jun 1, 2026Xu Diyongdirector, 10 percent owner: Buy625,000$8.00
Jun 1, 2026Xu Diyongdirector, 10 percent owner: Buy1,250,000$8.00
Mar 20, 2026Morrison Jodie Popedirector, officer: CEOGrant132,000—
Mar 20, 2026Violette Shelia M.officer: Chief Scientific OfficerGrant37,500—
Mar 20, 2026Kalowski Leeofficer: CFO and PresidentGrant53,250—

Source: QTTB SEC Form 4 filings, latest Aug 27, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their QTTB positions over the last 6 months (SEC Form 13F).

Increased
12
New positions
11
Reduced
12
Sold out
52
Largest moves
InstitutionActionSharesFiled
ORBIMED ADVISORS LLCUnchanged2.3MMay 15, 2026
ATLAS VENTURE LIFE SCIENCE ADVISORS, LLCUnchanged2.1MMay 14, 2026
OPALEYE MANAGEMENT INC.Increased1.3MMay 15, 2026
CARLYLE GROUP INC.Unchanged1.1MMay 8, 2026
ARCH VENTURE MANAGEMENT, LLCUnchanged320KMay 15, 2026
ACORN CAPITAL ADVISORS, LLCReduced315KMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position306KMay 15, 2026
MACKENZIE FINANCIAL CORPNew Position246KMay 13, 2026
SANOFIUnchanged244KMay 7, 2026
RENAISSANCE TECHNOLOGIES LLCIncreased207KMay 14, 2026
ACADIAN ASSET MANAGEMENT LLCIncreased173KMay 13, 2026
MONIMUS CAPITAL MANAGEMENT, LPNew Position134KMay 15, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased118KMay 15, 2026
PFIZER INCReduced102KMay 12, 2026
BLACKROCK, INC.Increased86KMay 13, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.

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