NASDAQ: QTTB
Q32 Bio Inc Stock Ownership - Who owns Q32 Bio?

Insider buying vs selling

Have Q32 Bio Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Shelia M. VioletteChief Scientific Officer2026-02-252,815$4.51
$12.71kSell
Jodie Pope MorrisonCEO2026-02-259,896$4.51
$44.67kSell
Lee KalowskiCFO and President2026-02-253,995$4.51
$18.03kSell
Jodie Pope MorrisonCEO2025-12-0222,506$3.46
$77.87kSell
Lee KalowskiCFO and President2025-12-029,072$3.46
$31.40kSell
Lee KalowskiCFO and President2025-08-264,240$1.80
$7.64kSell
Shelia M. VioletteChief Scientific Officer2025-08-262,990$1.80
$5.38kSell
Jodie Pope MorrisonCEO2025-08-2610,494$1.80
$18.90kSell

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Net Insider Buy/Sell (L12M) Ownership

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QTTB Shareholders

What type of owners hold Q32 Bio Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Arch Venture Fund VIII LP39.43%5,768,694$39.00MInsider
James E. Flynn27.94%4,087,305$27.63MInsider
Orbimed Advisors LLC15.40%2,252,987$15.23MInsider
Diyong Xu15.40%2,252,987$15.23MInsider
Orbimed Advisors LLC15.40%2,252,987$15.23MInstitution
Atlas Venture Fund X LP14.30%2,092,106$14.14MInsider
David S. Grayzel14.30%2,092,106$14.14MInsider
Atlas Venture Life Science Advisors LLC14.30%2,092,106$14.14MInstitution
Carlyle Group Inc7.54%1,102,741$7.45MInstitution
Mahendra Shah6.22%909,742$6.15MInsider

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QTTB vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
QTTB28.18%71.82%Net SellingNet Selling
GNLX20.34%6.30%Net SellingNet Selling
INO47.80%45.02%Net SellingNet Selling
IPHA0.32%0.00%
MSLE0.00%0.00%

Q32 Bio Stock Ownership FAQ

Who owns Q32 Bio?

Q32 Bio (NASDAQ: QTTB) is owned by 54.98% institutional shareholders, 140.17% Q32 Bio insiders, and 0.00% retail investors. Arch Venture Fund VIII LP is the largest individual Q32 Bio shareholder, owning 5.77M shares representing 39.43% of the company. Arch Venture Fund VIII LP's Q32 Bio shares are currently valued at $42.11M.

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