METZGER MICHAEL A

PrivateCIK: 1507220
Location

WALTHAM, MA

Senior insider sale

President and COO at SYNDAX PHARMACEUTICALS INC — senior position signals high conviction

$882.4K

39.22K shares

What this filing means

METZGER MICHAEL A plans to sell 39.22K shares of SYNDAX PHARMACEUTICALS INC valued at approximately $882.4K. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

InsiderMETZGER MICHAEL ACIK 1507220
Officer· President and COO
Since Feb 2019
39.22K
Shares to sell
$882.4K
Approx. market value
32.38K
Acquired (3 months)
1
Planned
1 completed
Securities Acquired — Last 3 Months1
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Exercise of Stock Options

Cash

7/8/2026
32.38K
Total acquired32.38K
Planned & Completed Dispositions2
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Completed

Completed

Units to sell

6.85K

Market value

$130.0K

6/1/2026

Planned — Approximate Date

NASDAQPlanned

Units to sell

32.38K

Market value

$752.4K

7/8/2026
Total

Units

39.22K

Value

$882.4K