METZGER MICHAEL A

PrivateCIK: 1507220
Location

WALTHAM, MA

METZGER MICHAEL A (President and COO) sold 34.5% of their position (157.31K shares) of SYNDAX PHARMACEUTICALS INC on the open market

Open‑market sale worth $2.58M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderMETZGER MICHAEL ACIK 1507220
Officer· President and COO
Since Feb 2019
+157.31K
Net shares
Net buyer
$2.58M
Total sold
1
Open market trades
0B · 1S
3
Total transactions
314.61K acquired · 157.31K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+157.31K

Price / share

$10.90

Trade value

$1.71M

% of position

52.7%
9/8/2025
298.66K455.97K

Common Stock

Direct
S · Sale

Shares

157.31K

Price / share

$16.41

Trade value

$2.58M

% of position

34.5%
9/8/2025
455.97K298.66K
Total

Net shares

+0.00

Net value

-$867.38K

Derivative Transactions1

Stock options (Right to buy)

Direct
M · Option Exercise
Converts to

Common Stock

157.31K shares

Shares

+157.31K

Strike price

10.90

Held after

0.00

Exercisable

9/8/2025
METZGER MICHAEL A — Insider Transaction (Form 4) Filed Sep 8, 2025 | Finecho