M. Scot Roberts

CIK: 0001705905

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)8 (33.3%)

Derivative conversions

Awards (A)8 (33.3%)

Compensation grants

Other (G, F, J, C, D, …)8 (33.3%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

ALT

Altimmune, Inc.

Officer

Discretionary Trading P&L

Holdings

Transaction History (24 total)

ALT
Altimmune, Inc.
Jul 31, 2026
Award(A)
Direct
875 shares at avg. $2.41$2K
ALT
Altimmune, Inc.
Feb 26, 2026
Award(A)
Restricted Stock Units
Direct
95.4K shares-
ALT
Altimmune, Inc.
Feb 26, 2026
Award(A)
Stock Options (option to buy)
Direct
222.7K shares-
ALT
Altimmune, Inc.
Feb 2, 2026
Tax Payment(F)
Direct
2.3K shares at avg. $5.55$13K
ALT
Altimmune, Inc.
Feb 2, 2026
Exercise(M)
Direct
7.8K shares-
ALT
Altimmune, Inc.
Jan 31, 2026
Award(A)
Direct
5.6K shares at avg. $3.07$17K
ALT
Altimmune, Inc.
Jan 30, 2026
Exercise(M)
Direct
9.3K shares-
ALT
Altimmune, Inc.
Jan 30, 2026
Tax Payment(F)
Direct
2.9K shares at avg. $5.60$16K
ALT
Altimmune, Inc.
Jan 27, 2026
Tax Payment(F)
Direct
4.7K shares at avg. $6.18$29K
ALT
Altimmune, Inc.
Jan 27, 2026
Exercise(M)
Direct
15.9K shares-
ALT
Altimmune, Inc.
Jan 25, 2026
Tax Payment(F)
Direct
4.4K shares at avg. $5.50$24K
ALT
Altimmune, Inc.
Jan 25, 2026
Exercise(M)
Direct
14.6K shares-
ALT
Altimmune, Inc.
Jul 31, 2025
Award(A)
Direct
846 shares at avg. $3.14$3K
ALT
Altimmune, Inc.
Feb 2, 2025
Tax Payment(F)
Direct
2.3K shares at avg. $6.64$15K
ALT
Altimmune, Inc.
Feb 2, 2025
Exercise(M)
Direct
7.8K shares-
ALT
Altimmune, Inc.
Feb 1, 2025
Tax Payment(F)
Direct
1.8K shares at avg. $6.64$12K
ALT
Altimmune, Inc.
Feb 1, 2025
Exercise(M)
Direct
6.2K shares-
ALT
Altimmune, Inc.
Jan 31, 2025
Award(A)
Direct
3.2K shares at avg. $5.18$16K
ALT
Altimmune, Inc.
Jan 30, 2025
Tax Payment(F)
Direct
2.7K shares at avg. $7.00$19K
ALT
Altimmune, Inc.
Jan 30, 2025
Exercise(M)
Direct
9.3K shares-
ALT
Altimmune, Inc.
Jan 27, 2025
Award(A)
Stock Options (option to buy)
Direct
183.6K shares-
ALT
Altimmune, Inc.
Jan 27, 2025
Award(A)
Restricted Stock Units
Direct
63.4K shares-
ALT
Altimmune, Inc.
Jan 25, 2025
Exercise(M)
Direct
14.6K shares-
ALT
Altimmune, Inc.
Jan 25, 2025
Tax Payment(F)
Direct
4.3K shares at avg. $6.98$30K

		Type	Shares	Price		Ownership
Jul 31, 2026	ALT Altimmune, Inc.	Award(A)	875	$2.41	$2,112	Direct
Feb 26, 2026	ALT Altimmune, Inc.	Award(A) Restricted Stock Units	95,430	-	-	Direct
Feb 26, 2026	ALT Altimmune, Inc.	Award(A) Stock Options (option to buy)	222,670	-	-	Direct
Feb 2, 2026	ALT Altimmune, Inc.	Tax Payment(F)	2,329	$5.55	$12,926	Direct
Feb 2, 2026	ALT Altimmune, Inc.	Exercise(M)	7,775	-	$0	Direct
Jan 31, 2026	ALT Altimmune, Inc.	Award(A)	5,567	$3.07	$17,091	Direct
Jan 30, 2026	ALT Altimmune, Inc.	Exercise(M)	9,275	-	$0	Direct
Jan 30, 2026	ALT Altimmune, Inc.	Tax Payment(F)	2,859	$5.60	$16,010	Direct
Jan 27, 2026	ALT Altimmune, Inc.	Tax Payment(F)	4,748	$6.18	$29,343	Direct
Jan 27, 2026	ALT Altimmune, Inc.	Exercise(M)	15,850	-	$0	Direct
Jan 25, 2026	ALT Altimmune, Inc.	Tax Payment(F)	4,373	$5.50	$24,052	Direct
Jan 25, 2026	ALT Altimmune, Inc.	Exercise(M)	14,600	-	$0	Direct
Jul 31, 2025	ALT Altimmune, Inc.	Award(A)	846	$3.14	$2,656	Direct
Feb 2, 2025	ALT Altimmune, Inc.	Tax Payment(F)	2,316	$6.64	$15,378	Direct
Feb 2, 2025	ALT Altimmune, Inc.	Exercise(M)	7,775	-	-	Direct
Feb 1, 2025	ALT Altimmune, Inc.	Tax Payment(F)	1,801	$6.64	$11,959	Direct
Feb 1, 2025	ALT Altimmune, Inc.	Exercise(M)	6,166	-	-	Direct
Jan 31, 2025	ALT Altimmune, Inc.	Award(A)	3,184	$5.18	$16,493	Direct
Jan 30, 2025	ALT Altimmune, Inc.	Tax Payment(F)	2,709	$7.00	$18,963	Direct
Jan 30, 2025	ALT Altimmune, Inc.	Exercise(M)	9,275	-	-	Direct
Jan 27, 2025	ALT Altimmune, Inc.	Award(A) Stock Options (option to buy)	183,600	-	-	Direct
Jan 27, 2025	ALT Altimmune, Inc.	Award(A) Restricted Stock Units	63,400	-	-	Direct
Jan 25, 2025	ALT Altimmune, Inc.	Exercise(M)	14,600	-	$0	Direct
Jan 25, 2025	ALT Altimmune, Inc.	Tax Payment(F)	4,264	$6.98	$29,763	Direct

1-24 of 24 transactions

About Roberts M Scot

Roberts M Scot (SEC CIK 0001705905) files insider reports with the SEC as Chief Scientific Officer of Altimmune, Inc. (ALT).

Signal8 holds 8 ownership filings by Roberts M Scot, all Form 4s, filed between Jan 28, 2025 and Aug 3, 2026. Those filings report 24 transactions, from Jan 25, 2025 to Jul 31, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Roberts M Scot's filings is in GAITHERSBURG, MD.

Recent filings by Roberts M Scot

Jul 31, 2026: Grant or award of ALT shares (Form 4, code A).
Feb 26, 2026: Grants or awards of ALT derivative securities (2 lines, Form 4, code A).
Feb 2, 2026: Tax withholding of ALT shares (Form 4, code F).
Feb 2, 2026: Option exercise of ALT shares (Form 4, code M).
Jan 31, 2026: Grant or award of ALT shares (Form 4, code A).

Other insiders filing for Altimmune, Inc. (ALT)

Arbet-Engels Christophe, Chief Medical Officer
WEAVER GREGORY L, Chief Financial Officer
MENZIUSO RICHARD THOMAS, Principal Accounting Officer
Richardson Linda M, Chief Commercial Officer
Durso Jerome Benedict, President and CEO
Lawver Teri L, Director

How to read Form 4 transaction codes