Garg Vipin K 4

4 · Altimmune, Inc. · Filed Jan 29, 2026

AI-generated summary of this filing

Updated Jan 29, 2026

Altimmune (ALT) Director Vipin Garg Exercises RSUs, Withholds Shares

What Happened

Vipin Garg, a director of Altimmune, had 41,200 restricted stock units (RSUs) convert into common shares on January 27, 2026. The conversion price was $0.00 per share (RSUs → shares).
To satisfy tax withholding, 17,898 of those shares were surrendered to the company at a reported value of $6.18 per share, totaling $110,610. Net shares retained by Garg from this vesting event were approximately 23,302.

Key Details

Transaction date: 2026-01-27 (reported on Form 4 filed 2026-01-29).
Actions reported: M = exercise/conversion of RSUs (41,200 shares); F = shares surrendered for tax withholding (17,898 shares at $6.18 each, $110,610).
Net new shares retained after withholding: ~23,302 (41,200 acquired − 17,898 withheld).
Shares owned after the transaction: not specified in the filing.
Footnotes: F1–F3 state each RSU converts to one share at vesting, withheld shares were solely to cover taxes, RSUs vest in equal annual installments over 4 years from Jan 27, 2025, and have no expiration date.
Filing timeliness: Filing appears timely (transaction 1/27/2026, Form 4 filed 1/29/2026).

Context

This was a vesting/conversion of RSUs, not an open-market purchase or a discretionary sale; surrendering shares to cover taxes is a routine withholding action and does not necessarily indicate a trading decision.
For retail investors, purchases or outright open-market sales by insiders generally carry more interpretive weight; vesting-related withholding is common compensation processing.

Form 4

Period: 2026-01-27

Director

Transactions

Exercise/Conversion
Common Stock, par value $0.0001
[F1]
2026-01-27+41,200→ 420,348 total
Tax Payment
Common Stock, par value $0.0001
[F2]
2026-01-27$6.18/sh−17,898$110,610→ 402,450 total
Exercise/Conversion
Restricted Stock Units
[F1][F3]
2026-01-27−41,200→ 123,600 total
→ Common Stock, par value $0.0001 (41,200 underlying)

Footnotes (3)

[F1]Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of Common Stock, par value $0.0001, when vested.
[F2]Vesting transaction: Shares surrendered to the Issuer solely to cover taxes associated with vesting of RSUs.
[F3]The RSUs vest in substantially equal annual installments over the 4 years following January 27, 2025, subject to the reporting person's continued service through the applicable vesting date, and have no expiration date.

Signature

/s/ Gregory Weaver, as Attorney-in-Fact|2026-01-29

1 file