Dennis Podlesak

3.0

3.0

Position	Company	Period
Chairman of the Board	Adynxx Inc	None -
Independent Chairman of the Board	Syndax Pharmaceuticals Inc	Dec. 1, 2008 -
Director	Euthymics Bioscience Inc	April 4, 2006 - Jan. 1, 2012

Brian Posner

• 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
2025-08-18	2025-08-18	Syndax Pharmaceuticals Inc (SNDX)	PrS Proposed sale	50,043 343.19 US$2,788,693	50,043	343.19	US$2,788,693
2025-08-18	2025-08-18	Syndax Pharmaceuticals Inc (SNDX)	PlS Planned sale	10,462 -10.3% 316.16 US$4,833,748	10,462 -10.3%	316.16	US$4,833,748
2025-08-18	2025-08-15	Syndax Pharmaceuticals Inc (SNDX)	PlS Planned sale	824 +14.0% 127.88 US$3,785,813	824 +14.0%	127.88	US$3,785,813
2025-08-18	2025-08-14	Syndax Pharmaceuticals Inc (SNDX)	PlS Planned sale	19,200 -9.1% 14.19 US$272,521	19,200 -9.1%	14.19	US$272,521
2025-08-14	2025-08-14	Syndax Pharmaceuticals Inc (SNDX)	PrS Proposed sale	43,200 13.45 US$581,040	43,200	13.45	US$581,040
2022-09-16	2022-09-16	Syndax Pharmaceuticals Inc (SNDX)	PlS Planned sale	6,556 -8.0% 23.43 US$153,625	6,556 -8.0%	23.43	US$153,625
2022-09-16	2022-09-16	Syndax Pharmaceuticals Inc (SNDX)	PlS Planned sale	5,419 -6.7% 23.43 US$126,982	5,419 -6.7%	23.43	US$126,982
2022-09-16	2022-09-15	Syndax Pharmaceuticals Inc (SNDX)	PlS Planned sale	66,840 -46.9% 24.20 US$1,617,381	66,840 -46.9%	24.20	US$1,617,381
2021-04-22	2021-04-22	Syndax Pharmaceuticals Inc (SNDX)	B Purchase	13,967 +47.6% 14.11 US$197,077	13,967 +47.6%	14.11	US$197,077