MetaCap

Altimmune Insider Trades

NASDAQ: ALTHealth CareBiotechnology: Pharmaceutical PreparationsUSD

2.61+0.01 (+0.38%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Last 12 months

Purchases
11 · $370.04K
Sales
0 · $0
Shares bought / sold
105.23K / 0
Net activity
Net buying $370,038

Altimmune insider activity

Over the last 12 months, Altimmune insiders reported 44 transactions on SEC Form 4: 11 open-market purchases and 0 sales. Insiders bought $370,038 and sold $0 worth of stock, for net insider buying of $370,038. The most recent filing shows Arbet-Engels Christophe (Chief Medical Officer) reporting a transaction in 37,500 shares on Oct 1, 2026.

Insider sales are common for compensation, tax and diversification reasons, while open-market purchases are rarer; tracking both helps put ALT's ownership changes in context.

Summary generated from market data by MetaCap's automated system. Methodology

ALT insider transactions

Altimmune insider transactions
DateInsiderTypeSharesValueFiling
Oct 1, 2026WEAVER GREGORY LChief Financial OfficerTax withholding4,379$12.09KForm 4
Oct 1, 2026WEAVER GREGORY LChief Financial OfficerOption exercise14,475—Form 4
Oct 1, 2026Arbet-Engels ChristopheChief Medical OfficerTax withholding12,679$34.99KForm 4
Oct 1, 2026Arbet-Engels ChristopheChief Medical OfficerOption exercise37,500—Form 4
Sep 16, 2026Richardson Linda MChief Commercial OfficerTax withholding6,826$22.12KForm 4
Sep 16, 2026Richardson Linda MChief Commercial OfficerOption exercise24,000—Form 4
Aug 13, 2026Durso Jerome BenedictPresident and CEOBuy15,000$44.25KForm 4
Jul 31, 2026WEAVER GREGORY LChief Financial OfficerAward1,753$4.23KForm 4
Jul 31, 2026Roberts M ScotChief Scientific OfficerAward875$2.11KForm 4
Apr 6, 2026GILL JOHNDirectorBuy9,200$31.35KForm 4
Apr 1, 2026Durso Jerome BenedictPresident and CEOBuy15,000$47.10KForm 4
Apr 1, 2026WEAVER GREGORY LChief Financial OfficerBuy10,000$31.50KForm 4
Mar 6, 2026Durso Jerome BenedictPresident and CEOBuy20,000$70.79KForm 4
Mar 6, 2026WEAVER GREGORY LChief Financial OfficerBuy5,000$17.70KForm 4
Feb 2, 2026Roberts M ScotChief Scientific OfficerTax withholding2,329$12.93KForm 4
Feb 2, 2026Roberts M ScotChief Scientific OfficerOption exercise7,775—Form 4
Jan 31, 2026Jordt Raymond MChief Business OfficerAward4,571$14.03KForm 4
Jan 31, 2026Garg Vipin KDirectorAward6,926$21.26KForm 4
Jan 31, 2026Roberts M ScotChief Scientific OfficerAward5,567$17.09KForm 4
Jan 30, 2026Garg Vipin KDirectorTax withholding11,632$65.14KForm 4
Jan 30, 2026Garg Vipin KDirectorOption exercise26,775—Form 4
Jan 30, 2026Roberts M ScotChief Scientific OfficerTax withholding2,859$16.01KForm 4
Jan 30, 2026Roberts M ScotChief Scientific OfficerOption exercise9,275—Form 4
Jan 27, 2026Roberts M ScotChief Scientific OfficerTax withholding4,748$29.34KForm 4
Jan 27, 2026Roberts M ScotChief Scientific OfficerOption exercise15,850—Form 4
Jan 27, 2026Jordt Raymond MChief Business OfficerTax withholding4,229$26.14KForm 4
Jan 27, 2026Jordt Raymond MChief Business OfficerOption exercise15,850—Form 4
Jan 27, 2026Garg Vipin KDirectorTax withholding17,898$110.61KForm 4
Jan 27, 2026Garg Vipin KDirectorOption exercise41,200—Form 4
Jan 25, 2026Garg Vipin KDirectorTax withholding17,984$98.91KForm 4
Jan 25, 2026Garg Vipin KDirectorOption exercise42,050—Form 4
Jan 25, 2026Roberts M ScotChief Scientific OfficerTax withholding4,373$24.05KForm 4
Jan 25, 2026Roberts M ScotChief Scientific OfficerOption exercise14,600—Form 4
Jan 25, 2026Jordt Raymond MChief Business OfficerTax withholding3,855$21.20KForm 4
Jan 25, 2026Jordt Raymond MChief Business OfficerOption exercise14,600—Form 4
Jan 8, 2026Pisano WayneDirectorBuy5,000$20.41KForm 4
Jan 5, 2026Sohn Catherine A.DirectorBuy500$2.12KForm 4
Jan 1, 2026Jordt Raymond MChief Business OfficerTax withholding2,475$8.93KForm 4
Jan 1, 2026Jordt Raymond MChief Business OfficerOption exercise9,375—Form 4
Dec 29, 2025Jorkasky DianeDirectorBuy527$2.00KForm 4
Dec 23, 2025GILL JOHNDirectorBuy12,500$51.25KForm 4
Dec 22, 2025Durso Jerome BenedictDirectorBuy12,500$51.57KForm 4
Nov 11, 2025WEAVER GREGORY LChief Financial OfficerTax withholding5,672$24.28KForm 4
Nov 11, 2025WEAVER GREGORY LChief Financial OfficerOption exercise18,750—Form 4
Sep 12, 2018Novartis Bioventures Ltd & NOVARTIS AG10% Ownerother2,069,993—Form 4
Jul 11, 2018Novartis Bioventures Ltd & NOVARTIS AG10% Ownerother663,346—Form 4
Jun 15, 2018Novartis Bioventures Ltd & NOVARTIS AG10% Ownerother14,449—Form 4
Jun 13, 2018Novartis Bioventures Ltd & NOVARTIS AG10% Ownerother720,878—Form 4
May 16, 2018Novartis Bioventures Ltd & NOVARTIS AG10% Ownerother767,728—Form 4
May 15, 2018Novartis Bioventures Ltd & NOVARTIS AG10% Ownerother274,703—Form 4

Transaction codes follow SEC Form 4: P = open-market purchase, S = open-market sale, A = grant or award, M = option exercise, F = shares withheld for taxes. About Form 4

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