Xu Diyong

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value	Details
2026-06-01	2026-05-28	Q32 Bio Inc (QTTB)	B Purchase	22,388 -15.3% 469.45 US$4,048,021	22,388 -15.3%	469.45	US$4,048,021
2026-06-01	2026-05-28	Q32 Bio Inc (QTTB)	B Purchase	3,658 +9.9% 140.17 US$3,125,895	3,658 +9.9%	140.17	US$3,125,895