STOCK TITAN

Altimmune, Inc. SEC Filings

ALT NASDAQ

Welcome to our dedicated page for Altimmune SEC filings (Ticker: ALT), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.

Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on Altimmune's stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.

Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time SEC filing updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into Altimmune's regulatory disclosures and financial reporting.

Rhea-AI Summary

Altimmune, Inc. (ALT) director Klaus Schafer reported receipt of a stock option award on 09/25/2025 that grants the right to buy 48,800 shares of common stock at an exercise price of $3.92 per share. The option becomes exercisable in substantially equal monthly installments over the 12 months following the grant date, subject to continued service, and expires on 09/25/2035. Following the reported transaction, the reporting person beneficially owns 48,800 option shares directly. The filing was submitted via counsel and signed by an attorney-in-fact on 09/29/2025.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-5.25%
Tags
insider
-
Rhea-AI Summary

Altimmune director Mitchel Sayare was granted an option to purchase 48,800 shares of common stock at a $3.92 exercise price. The option was granted on 09/25/2025, becomes exercisable in substantially equal monthly installments over the 12 months following that date, and expires on 09/25/2035. The reporting on Form 4 indicates the position is held directly. The filing is signed by an attorney-in-fact on behalf of the reporting person.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-5.25%
Tags
insider
-
Rhea-AI Summary

Altimmune, Inc. director Philip Hodges was granted a stock option on 09/25/2025 to buy 48,800 shares of Altimmune common stock at an exercise price of $3.92 per share. The option becomes exercisable in substantially equal monthly installments over the 12 months following the grant date, subject to Hodges' continued service, and expires on 09/25/2035. After this grant, the reporting person beneficially owns 48,800 underlying shares on a direct basis. The Form 4 was signed by an attorney-in-fact on behalf of the reporting person.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-5.25%
Tags
insider
Rhea-AI Summary

Wayne Pisano, a director of Altimmune, Inc. (ALT), was granted stock options to purchase 48,800 shares of common stock at an exercise price of $3.92 per share. The options are exercisable beginning on 09/25/2025 and expire on 09/25/2035. The grant vests in substantially equal monthly installments over the 12 months following 09/25/2025, subject to continued service. Following the reported transaction, the reporting person beneficially owns 48,800 option shares, held directly.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-5.25%
Tags
insider
-
Rhea-AI Summary

Altimmune, Inc. reported the results of its 2025 Annual Meeting of Stockholders held on September 25, 2025. As of the August 12, 2025 record date, 88,257,253 common shares were outstanding and entitled to vote. A total of 51,688,116 shares were present in person or by proxy, representing 58.6% of the voting power and establishing a quorum.

Stockholders elected all nominated directors, including Chairman Jerome Durso and Chief Executive Officer Vipin K. Garg, Ph.D., with each nominee receiving more votes “for” than “withheld.” Stockholders also ratified the appointment of Ernst & Young LLP as independent registered public accounting firm for the year ending December 31, 2025, with 48,959,891 votes for, 1,355,769 against and 1,372,456 abstentions.

In an advisory “say-on-pay” vote, stockholders approved the compensation of Altimmune’s named executive officers, with 14,885,881 votes for, 6,683,682 against and 267,424 abstentions, plus 29,851,129 broker non-votes. Stockholders also approved a proposal to authorize possible adjournment of the meeting to allow additional proxy solicitation, with 33,695,815 votes for, 16,363,206 against and 1,629,095 abstentions.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
current report
-
Rhea-AI Summary

Altimmune insider grant summary: Linda M. Richardson, listed as Chief Commercial Officer and a director, reported equity awards on 09/16/2025. She was awarded stock options to purchase 278,000 shares with an exercise price of $3.63 and restricted stock units representing 96,000 shares. Both awards vest over four years, with 25% vesting on September 16, 2026, and the remainder vesting in installments thereafter; the options expire September 16, 2035. Following the transaction, Richardson beneficially owns 278,000 option shares and 96,000 RSUs as reported. The filing was signed by an attorney-in-fact on 09/17/2025.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
insider
Rhea-AI Summary

Altimmune, Inc. (ALT) Form 3: Linda M. Richardson submitted an initial Section 16 Form 3 reporting relationship to Altimmune as Chief Commercial Officer and a director-level officer. The filing states the date of the event as 09/16/2025 and the Form was signed by an attorney-in-fact on 09/17/2025. The Form explicitly notes no securities are beneficially owned by the reporting person and includes Exhibit 24 (Power of Attorney).

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
insider
-
Rhea-AI Summary

Altimmune, Inc. (ALT) is holding a virtual 2025 Annual Meeting of Stockholders on September 25, 2025 at 8:30 a.m. Eastern accessible at https://www.cstproxy.com/altimmune/2025 using a 12-digit control number. The proxy statement presents routine governance items: election of directors, ratification of Ernst & Young (E&Y) as independent auditors for the year ending December 31, 2025, an annual advisory "say-on-pay" vote on named executive officer compensation, and authorization to adjourn the meeting.

The filing references corporate governance materials and the Company Code of Ethics available on the investor relations site and notes the Audit Committee received PCAOB-required disclosures from E&Y and recommended inclusion of audited financial statements in the 2024 Form 10-K. Named executive officers listed for 2024 include Vipin K. Garg, Ph.D. (CEO), M. Scott Harris, M.D. (CMO), and M. Scot Roberts, Ph.D. (CSO). Benefit highlights include a 401(k) Plan with a 100% match on the first 4% of participant contributions. The statement also describes director nomination processes and related-party/merger background.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
-- %
Tags
proxy
-
Rhea-AI Summary

Altimmune reported strong clinical topline results from its IMPACT Phase 2b MASH trial, where weekly pemvidutide produced MASH resolution rates of 59.1% (1.2 mg) and 52.1% (1.8 mg) versus 19.1% for placebo (p<0.0001 for both doses). Fibrosis improvement by conventional ITT analysis was not statistically different, but an AI-based analysis showed a larger fibrosis reduction signal (30.6% of subjects on 1.8 mg achieved ≥60% fibrosis reduction versus 8.2% on placebo, p<0.001). Pemvidutide also drove mean weight loss of 5.0% and 6.2% at 1.2 mg and 1.8 mg versus 1.0% for placebo, and safety/tolerability appeared favorable with low discontinuation rates.

On the balance sheet, cash and equivalents were $183.1M at June 30, 2025, the company drew $15.0M of a $100M term loan facility (effective interest rate 14.4%), and generated net proceeds of $72.6M from at-the-market equity offerings in the period plus an additional $12.8M raised in July. The company recorded a six-month net loss of $41.7M and has an accumulated deficit of $603.1M. A class action alleging securities law violations was filed on August 5, 2025.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
7.1%
Tags
quarterly report
Rhea-AI Summary

Altimmune, Inc. filed a current report to furnish a press release announcing its financial results for the second quarter ended June 30, 2025. The press release, dated August 12, 2025, is included as Exhibit 99.1 and is provided for informational purposes rather than being formally filed under securities laws.

Rhea-AI Impact
Rhea-AI Sentiment
End-of-Day
7.1%
Tags
current report

FAQ

How many Altimmune (ALT) SEC filings are available on StockTitan?

StockTitan tracks 84 SEC filings for Altimmune (ALT), including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, and Form 4 insider trading disclosures. Each filing includes AI-generated summaries, impact scoring, and sentiment analysis.

When was the most recent SEC filing for Altimmune (ALT)?

The most recent SEC filing for Altimmune (ALT) was filed on September 29, 2025.