BASTA STEVEN L

PrivateCIK: 1417397
Location

SAN MATEO, CA

BASTA STEVEN L (President and CEO) exercised options at PHATHOM PHARMACEUTICALS, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderBASTA STEVEN LCIK 1417397
DirectorOfficer· President and CEO
Since Feb 2026
-48.38K
Net shares
Net seller
$564.1K
Total sold
0
Open market trades
0B · 0S
3
Total transactions
90K acquired · 138.38K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+90K

Price / share

Trade value

% of position

New position
9/25/2025
0.0090K

Common Stock

Direct
F · Tax Withholding

Shares

48.38K

Price / share

$11.66

Trade value

$564.05K

% of position

53.8%
9/25/2025
90K41.63K
Total

Net shares

+41.63K

Net value

-$564.05K

Derivative Transactions1

Performance Shares

Direct
M · Option Exercise
Converts to

Common Stock

90K shares

Shares

90K

Strike price

0

Held after

270K

Exercisable

9/25/2025
BASTA STEVEN L — Insider Transaction (Form 4) Filed Sep 26, 2025 | Finecho