Briggs Morrison - 14 Sep 2022 Form 4 Insider Report for Syndax Pharmaceuticals Inc (SNDX)

Signature
/s/ Michael A. Metzger, Attorney-in-fact
Issuer symbol
SNDX
Transactions as of
14 Sep 2022
Net transactions value
-$4,396,277
Form type
4
Filing time
16 Sep 2022, 17:34:18 UTC
Previous filing
05 Jul 2022
Next filing
21 Sep 2022

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SNDX Common Stock Options Exercise $631,044 +87,645 +491% $7.20 105,481 14 Sep 2022 Direct
transaction SNDX Common Stock Sale $2,085,855 -87,645 -83% $23.80 17,836 14 Sep 2022 Direct F1, F2
transaction SNDX Common Stock Options Exercise $480,780 +66,775 +374% $7.20 84,611 15 Sep 2022 Direct
transaction SNDX Common Stock Sale $1,616,035 -66,775 -79% $24.20 17,836 15 Sep 2022 Direct F1, F3
transaction SNDX Common Stock Options Exercise $518,155 +71,966 +403% $7.20 89,802 16 Sep 2022 Direct
transaction SNDX Common Stock Sale $1,671,015 -71,966 -80% $23.22 17,836 16 Sep 2022 Direct F1, F4
transaction SNDX Common Stock Options Exercise $578,071 +53,034 +297% $10.90 70,870 16 Sep 2022 Direct
transaction SNDX Common Stock Sale $1,231,423 -53,034 -75% $23.22 17,836 16 Sep 2022 Direct F1, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SNDX Stock Options (Right to buy) Options Exercise $0 -87,645 -100% $0.000000* 0 14 Sep 2022 Common Stock 87,645 $7.20 Direct F5
transaction SNDX Stock Options (Right to buy) Options Exercise $0 -66,775 -100% $0.000000* 0 15 Sep 2022 Common Stock 66,775 $7.20 Direct F5
transaction SNDX Stock Options (Right to buy) Options Exercise $0 -53,034 -100% $0.000000* 0 16 Sep 2022 Common Stock 53,034 $10.90 Direct F5
transaction SNDX Stock Options (Right to buy) Options Exercise $0 -71,966 -100% $0.000000* 0 16 Sep 2022 Common Stock 71,966 $7.20 Direct F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 plan adopted by the Reporting Person. Following the sales reported in this Form 4, the Reporting Person has a total of 948,946 options to purchase shares of common stock that are vested and immediately exercisable and a total of 245,042 options to purchase shares of common stock that have not yet vested.
F2 The sale prices ranged from $23.36 to $24.01
F3 The sale prices ranged from $23.36 to $24.64
F4 The sale prices ranged from $22.96 to $23.99
F5 This option is fully vested.