SYNDAX PHARMACEUTICALS INC

Ticker: SNDX CUSIP: 87164F105 Class: Common Stock

BlackRock, Inc.'s Holding History (CIK: 0002012383)

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

Q4 2025

Shares 8,239,002 Value ($000) $173,101 Avg Close $17.45 Range $12.99 - $22.73

Q3 2025

Shares 8,625,244 Value ($000) $132,699 Avg Close $13.09 Range $8.59 - $17.24

Q2 2025

Shares 10,456,907 Value ($000) $97,929 Avg Close $11.01 Range $8.58 - $14.24

Q1 2025

Shares 8,542,251 Value ($000) $104,942 Avg Close $14.10 Range $12.06 - $16.95

Q4 2024

Shares 9,033,949 Value ($000) $119,429 Avg Close $17.11 Range $12.40 - $22.50

Q3 2024

Shares 8,239,050 Value ($000) $158,602 Avg Close $20.66 Range $17.34 - $25.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	8,239,002	$173,101	$17.45	$12.99 - $22.73
Q3 2025	8,625,244	$132,699	$13.09	$8.59 - $17.24
Q2 2025	10,456,907	$97,929	$11.01	$8.58 - $14.24
Q1 2025	8,542,251	$104,942	$14.10	$12.06 - $16.95
Q4 2024	9,033,949	$119,429	$17.11	$12.40 - $22.50
Q3 2024	8,239,050	$158,602	$20.66	$17.34 - $25.07