Sirenia Capital Management LP Reports New 9.9% Stake in Q32 Bio Inc.

Sirenia Capital Management LP and Alex Silverstein have filed a Schedule 13G reporting a new 9.9% stake in Q32 Bio Inc. (QTTB) as of March 31, 2026. The reporting persons beneficially own 2,057,308 shares of Common Stock, which includes 1,025,654 shares issuable upon the exercise of warrants held by SILV Fund, Ltd., an investment fund managed by Sirenia. The reported ownership percentage is subject to a 9.99% blocker provision contained within the warrants, which prevents the reporting persons from exercising the warrants if it would result in beneficial ownership exceeding 9.99% of the outstanding Common Stock. Alex Silverstein, as the managing member of Sirenia's general partner, shares voting and dispositive power over the reported securities. The filing indicates that the shares were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. The calculation is based on 14,629,463 shares outstanding as of March 1, 2026.