CULLINAN ONCOLOGY INC

Ticker: CGEM CUSIP: 230031106 Class: Common Stock

Siren, L.L.C.'s Holding History (CIK: 0002005245)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 1,193,410 Value ($000) $12,352 Avg Close $9.02 Range $5.68 - $13.33

Q3 2025

Shares 1,193,410 Value ($000) $7,077 Avg Close $7.32 Range $5.86 - $8.70

Q2 2025

Shares 1,193,410 Value ($000) $8,986 Avg Close $8.04 Range $6.85 - $9.36

Q1 2025

Shares 1,193,410 Value ($000) $9,034 Avg Close $9.60 Range $7.30 - $12.98

Q4 2024

Shares 1,211,357 Value ($000) $14,754 Avg Close $14.37 Range $10.44 - $17.98

Q3 2024

Shares 1,211,357 Value ($000) $20,278 Avg Close $17.74 Range $15.67 - $21.01

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,193,410	$12,352	$9.02	$5.68 - $13.33
Q3 2025	1,193,410	$7,077	$7.32	$5.86 - $8.70
Q2 2025	1,193,410	$8,986	$8.04	$6.85 - $9.36
Q1 2025	1,193,410	$9,034	$9.60	$7.30 - $12.98
Q4 2024	1,211,357	$14,754	$14.37	$10.44 - $17.98
Q3 2024	1,211,357	$20,278	$17.74	$15.67 - $21.01