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Syndax Pharmaceuticals Inc. planned insider sales

In the last twelve months insiders at Syndax Pharmaceuticals Inc. filed 10 Form 144 notices of planned sales, 143,977 shares worth $2.8 million at the time of filing, from 5 sellers. The latest, filed 29 October 2026: Dennis G Podlesak (director), 8,000 shares worth $114,560, planned for around 29 October 2026 through Morgan Stanley Smith Barney LLC Executive Financial Services.

FiledSellerRelationshipSharesValuePlanned saleSold, per Form 4BrokerHow acquiredFiling
29 October 2026Dennis G PodlesakDirector8,000$114,56029 October 2026None on Form 4 yetMorgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
8 July 2026Michael MetzgerDirector, Officer32,375$752,3958 July 202632,375 shares from 8 July 2026Morgan Stanley Smith Barney LLC Executive Financial ServicesExercise of Stock OptionsForm 144
12 June 2026Botwood Nicholas A.J.Officer31,235$566,69312 June 202665,515 shares from 11 June 2026Fidelity Brokerage Services LLCStock Option ExerciseForm 144
11 June 2026Botwood Nicholas A.J.Officer34,280$609,43511 June 2026No matching Form 4 saleFidelity Brokerage Services LLCOpen Market Purchase; Restricted Stock Vesting; Stock Option ExerciseForm 144
1 June 2026Goldan Keith A.Officer1,177$22,3521 June 20261,177 shares from 1 June 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
1 June 2026Metzger Michael AOfficer, Director6,847$130,0281 June 20266,847 shares from 1 June 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
9 February 2026Goldan Keith A.Officer3,410$71,7079 February 20263,410 shares from 9 February 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
9 February 2026Metzger Michael AOfficer, Director17,159$360,8269 February 202617,159 shares from 9 February 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
6 February 2026Goldan Keith A.Officer2,082$42,9316 February 20262,082 shares from 6 February 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
6 February 2026Metzger Michael AOfficer, Director7,412$152,8366 February 20267,412 shares from 6 February 2026Fidelity Brokerage Services LLCRestricted Stock VestingForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Sold, per Form 4: the same seller's open-market sales on Form 4 from the notice's date to 90 days after, added up, as they appear on the insiders page; a holder who files no Form 4, such as some large holders, never shows one. What is a Form 144?