Jerome Benedict Durso

CIK: 0001698665

Transaction Breakdown

Open Market Buys (P)4 (50.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)4 (50.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

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

Companies & Roles (1)

ALT

Altimmune, Inc.

DirectorOfficer

Discretionary Trading P&L

Holdings

Transaction History (8 total)

ALT
Altimmune, Inc.
Aug 13, 2026
Purchase(P)
Direct
15K shares at avg. $2.95$44K
ALT
Altimmune, Inc.
Apr 1, 2026
Purchase(P)
Direct
15K shares at avg. $3.14$47K
ALT
Altimmune, Inc.
Mar 6, 2026
Purchase(P)
Direct
20K shares at avg. $3.54$71K
ALT
Altimmune, Inc.
Dec 22, 2025
Purchase(P)
Direct
12.5K shares at avg. $4.13$52K
ALT
Altimmune, Inc.
Dec 1, 2025
Award(A)
Stock Options (option to buy)
Direct
1.8M shares-
ALT
Altimmune, Inc.
Dec 1, 2025
Award(A)
Restricted Stock Units
Direct
633.7K shares-
ALT
Altimmune, Inc.
Sep 25, 2025
Award(A)
Stock Options (option to buy)
Direct
48.8K shares-
ALT
Altimmune, Inc.
Feb 24, 2025
Award(A)
Stock Options (option to buy)
Direct
69.8K shares-

		Type	Shares	Price		Ownership
Aug 13, 2026	ALT Altimmune, Inc.	Purchase(P)	15,000	$2.95	$44,250	Direct
Apr 1, 2026	ALT Altimmune, Inc.	Purchase(P)	15,000	$3.14	$47,100	Direct
Mar 6, 2026	ALT Altimmune, Inc.	Purchase(P)	20,000	$3.54	$70,790	Direct
Dec 22, 2025	ALT Altimmune, Inc.	Purchase(P)	12,500	$4.13	$51,569	Direct
Dec 1, 2025	ALT Altimmune, Inc.	Award(A) Stock Options (option to buy)	1,824,400	-	-	Direct
Dec 1, 2025	ALT Altimmune, Inc.	Award(A) Restricted Stock Units	633,700	-	-	Direct
Sep 25, 2025	ALT Altimmune, Inc.	Award(A) Stock Options (option to buy)	48,800	-	-	Direct
Feb 24, 2025	ALT Altimmune, Inc.	Award(A) Stock Options (option to buy)	69,800	-	-	Direct

1-8 of 8 transactions

About Durso Jerome Benedict

Durso Jerome Benedict (SEC CIK 0001698665) files insider reports with the SEC as President and CEO of Altimmune, Inc. (ALT).

Signal8 holds 8 ownership filings by Durso Jerome Benedict (1 Form 3, 7 Form 4), filed between Feb 25, 2025 and Aug 13, 2026. Those filings report 8 transactions, from Feb 24, 2025 to Aug 13, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Durso Jerome Benedict's filings is in GAITHERSBURG, MD.

Recent filings by Durso Jerome Benedict

Aug 13, 2026: Open-market purchase of ALT shares (Form 4, code P).
Apr 1, 2026: Open-market purchase of ALT shares (Form 4, code P).
Mar 6, 2026: Open-market purchase of ALT shares (Form 4, code P).
Dec 22, 2025: Open-market purchase of ALT shares (Form 4, code P).
Dec 1, 2025: Grants or awards of ALT derivative securities (2 lines, 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
Roberts M Scot, Chief Scientific Officer
Lawver Teri L, Director

How to read Form 4 transaction codes