• Live Feeds
    • Press Releases
    • Insider Trading
    • FDA Approvals
    • Analyst Ratings
    • Insider Trading
    • SEC filings
    • Market insights
  • Analyst Ratings
  • Alerts
  • Subscriptions
  • Settings
  • RSS Feeds
Quantisnow Logo
  • Live Feeds
    • Press Releases
    • Insider Trading
    • FDA Approvals
    • Analyst Ratings
    • Insider Trading
    • SEC filings
    • Market insights
  • Analyst Ratings
  • Alerts
  • Subscriptions
  • Settings
  • RSS Feeds
PublishGo to App
    Quantisnow Logo

    © 2026 quantisnow.com
    Democratizing insights since 2022

    Services
    Live news feedsRSS FeedsAlertsPublish with Us
    Company
    AboutQuantisnow PlusContactJobsAI superconnector for talent & startupsNEWLLM Arena
    Legal
    Terms of usePrivacy policyCookie policy

    Amendment: SEC Form SC 13G/A filed by Altimmune Inc.

    7/10/24 6:35:56 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care
    Get the next $ALT alert in real time by email
    SC 13G/A 1 Altimmune_Inc.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 AMENDED FILING ALTIMMUNE INC (NAME OF ISSUER) COMMON STOCK (TITLE OF CLASS OF SECURITIES) 02155H200 (CUSIP NUMBER) 06/30/2024 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURSUANT TO WHICH THIS SCHEDULE IS FILED: (X) RULE 13D-1 (B) ( ) RULE 13D-1 (C) ( ) RULE 13D-1 (D) *THE REMAINDER OF THIS COVER PAGE SHALL BE FILLED OUT FOR A REPORTING PERSON`S INITIAL FILING ON THIS FORM WITH RESPECT TO THE SUBJECT CLASS OF SECURITIES, AND FOR ANY SUBSEQUENT AMENDMENT CONTAINING INFORMATION WHICH WOULD ALTER THE DISCLOSURES PROVIDED IN A PRIOR COVER PAGE. THE INFORMATION REQUIRED IN THE REMAINDER OF THIS COVER PAGE SHALL NOT BE DEEMED TO BE "FILED" FOR THE PURPOSE OF SECTION 18 OF THE SECURITIES EXCHANGE ACT OF 1934 ("ACT") OR OTHERWISE SUBJECT TO THE LIABILITIES OF THAT SECTION OF THE ACT BUT SHALL BE SUBJECT TO ALL OTHER PROVISIONS OF THE ACT (HOWEVER, SEE THE NOTES). CUSIP NO:02155H200 13G Page 2 of 5 Pages 1. NAME OF REPORTING PERSON: STATE STREET CORPORATION I.R.S. IDENTIFICATION NO. OF THE ABOVE PERSON: 04-2456637 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP NOT APPLICABLE 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION BOSTON, MASSACHUSETTS 5. SOLE VOTING POWER 0 SHARES 6. SHARED VOTING POWER 3,667,576 7. SOLE DISPOSITIVE POWER 0 SHARES 8. SHARED DISPOSITIVE POWER 3,909,286 9. AGGREGATED AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,909,286 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES NOT APPLICABLE 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.51% 12. TYPE OF REPORTING PERSON HC CUSIP NO: 02155H200 13G Page 3 of 5 Pages ITEM 1. (A) NAME OF ISSUER ALTIMMUNE INC (B) ADDRESS OF ISSUER`S PRINCIPAL EXECUTIVE OFFICES 910 CLOPPER ROAD SUITE 201S GAITHERSBURG MD 20878 UNITED STATES ITEM 2. (A) NAME OF PERSON FILING STATE STREET CORPORATION (B) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE STATE STREET FINANCIAL CENTER 1 CONGRESS STREET, SUITE 1 BOSTON, MA 02114-2016 (FOR ALL REPORTING PERSONS) (C) CITIZENSHIP: SEE ITEM 4 (CITIZENSHIP OR PLACE OF ORGANIZATION) OF COVER PAGES (D) TITLE OF CLASS OF SECURITIES COMMON STOCK (E) CUSIP NUMBER: 02155H200 ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULE 13D-1(B), OR 13D-2(B) OR (C), CHECK WHETHER THE PERSON FILING IS A: SEE ITEM 12(TYPE OF REPORTING PERSON) OF THE COVER PAGE FOR EACH REPORTING PERSON AND THE TABLE BELOW, WHICH EXPLAINS THE MEANING OF THE TWO LETTER SYMBOLS APPEARING IN ITEM 12 OF THE COVER PAGES. SYMBOL CATEGORY BK BANK AS DEFINED IN SECTION 3(A) (6) OF THE ACT. IC INSURANCE COMPANY AS DEFINED IN SECTION 3 (A) (19) OF THE ACT IC INVESTMENT COMPANY REGISTERED UNDER SECTION 8 OF THE INVESTMENT COMPANY ACT OF 1940. IA AN INVESTMENT ADVISOR IN ACCORDANCE WITH RULE 13D-1(B) (1) (II) (E). EP AN EMPLOYEE BENEFIT PLAN OR ENDOWMENT FUND IN ACCORDANCE WITH RULE 13D-1(B) (1) (II) (F) . HC A PARENT HOLDING COMPANY OR CONTROL PERSON IN ACCORDANCE WITH RULE 13D-1(B)(1)(II) (G). SA A SAVINGS ASSOCIATIONS AS DEFINED IN SECTION 3(B) OF THE FEDERAL DEPOSIT INSURANCE ACT (12 U.S.C. 1813). CP A CHURCH PLAN THAT IS EXCLUDED FROM THE DEFINITION OF AN INVESTMENT COMPANY UNDER SECTION 3(C)(14) OF THE INVESTMENT COMPANY ACT OF 1940. CUSIP NO:02155H200 13G Page 4 of 5 Pages ITEM 4. OWNERSHIP THE INFORMATION SET FORTH IN ROWS 5 THROUGH 11 OF THE COVER PAGE HERETO FOR EACH OF THE REPORTING PERSONS IS INCORPORATED HEREIN BY REFERENCE. ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF CLASS NOT APPLICABLE ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON NOT APPLICABLE ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON SEE EXHIBIT 1 ATTACHED HERETO ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP NOT APPLICABLE ITEM 9. NOTICE OF DISSOLUTION OF GROUP NOT APPLICABLE CUSIP NO:02155H200 13G Page 5 of 5 Pages ITEM 10. CERTIFICATION BY SIGNING BELOW I CERTIFY THAT, TO THE BEST OF MY KNOWLEDGE AND BELIEF, THE SECURITIES REFERRED TO ABOVE WERE ACQUIRED AND ARE HELD IN THE ORDINARY COURSE OF BUSINESS AND WERE NOT ACQUIRED AND ARE NOT HELD FOR THE PURPOSE OR WITH THE EFFECT OF CHANGING OR INFLUENCING THE CONTROL OF THE ISSUER OF THE SECURITIES AND WERE NOT ACQUIRED AND ARE NOT HELD IN CONNECTION WITH OR AS A PARTICIPANT IN ANY TRANSACTION HAVING THAT PURPOSE OR EFFECT. SIGNATURES AFTER REASONABLE INQUIRY AND TO THE BEST OF HIS KNOWLEDGE AND BELIEF, EACH OF THE UNDERSIGNED CERTIFIES THAT THE INFORMATION SET FORTH IN THIS STATEMENT IS TRUE, COMPLETE AND CORRECT. STATE STREET CORPORATION ELIZABETH SCHAEFER SENIOR VICE PRESIDENT, CHIEF ACCOUNTING OFFICER EXHIBIT 1 THE FOLLOWING TABLE LISTS THE IDENTITY AND ITEM 3 CLASSIFICATION OF EACH SUBSIDIARY OF STATE STREET CORPORATION, THE PARENT HOLDING COMPANY, THAT BENEFICIALLY OWNS THE ISSUER`S SECURITIES. PLEASE REFER TO ITEM 3 OF THE ATTACHED SCHEDULE 13G FOR A DESCRIPTION OF EACH OF THE TWO-LETTER SYMBOLS REPRESENTING THE ITEM 3 CLASSIFICATION BELOW. SUBSIDIARY ITEM 3 CLASSIFICATION SSGA FUNDS MANAGEMENT, INC. IA STATE STREET GLOBAL ADVISORS EUROPE LIMITED IA STATE STREET GLOBAL ADVISORS LIMITED IA STATE STREET GLOBAL ADVISORS TRUST COMPANY IA NOTE: ALL OF THE LEGAL ENTITIES ABOVE ARE DIRECT OR INDIRECT SUBSIDIARIES OF STATE STREET CORPORATION.
    Get the next $ALT alert in real time by email

    Crush Q1 2026 with the Best AI Superconnector

    Stay ahead of the competition with Standout.work - your AI-powered talent-to-startup matching platform.

    AI-Powered Inbox
    Context-aware email replies
    Strategic Decision Support
    Get Started with Standout.work

    Recent Analyst Ratings for
    $ALT

    DatePrice TargetRatingAnalyst
    4/24/2026$2.50Sell → Neutral
    Goldman
    3/18/2026$12.00Buy
    Truist
    1/28/2026$20.00Overweight
    Barclays
    7/10/2025$1.00Sell
    Goldman
    2/28/2025Mkt Perform
    William Blair
    1/8/2025$18.00Buy
    Stifel
    11/12/2024$26.00Buy
    UBS
    4/29/2024Buy → Neutral
    Guggenheim
    More analyst ratings

    $ALT
    Press Releases

    Fastest customizable press release news feed in the world

    View All

    Pemvidutide Demonstrates Significant Metabolic Improvements in Patients with MASH in New 48‑Week IMPACT Phase 2b Data Presented at EASL 2026

    "Best of EASL" oral presentation highlights meaningful reductions in triglycerides, cholesterol, and blood pressure, along with improvements in key metabolic risk factors PERFORMA Phase 3 trial to further evaluate the broad metabolic and liver-related effects of pemvidutide GAITHERSBURG, Md., May 28, 2026 (GLOBE NEWSWIRE) -- Altimmune, Inc. (NASDAQ:ALT), a late clinical-stage biopharmaceutical company developing pemvidutide to address serious liver diseases, today announced that new 48-week data from the IMPACT Phase 2b trial show that pemvidutide, an investigational balanced glucagon/GLP-1 dual receptor agonist, significantly reduced elevated lipids while improving multiple cardiometabo

    5/28/26 11:00:00 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Altimmune to Participate in Upcoming Investor Conferences

    GAITHERSBURG, Md., May 27, 2026 (GLOBE NEWSWIRE) -- Altimmune, Inc. (NASDAQ:ALT), a late clinical-stage biopharmaceutical company developing pemvidutide to address serious liver diseases, today announced that management will participate in the following upcoming investor conferences: 2026 Jefferies Global Healthcare ConferenceThursday, June 4, 2026Fireside chat at 12:50 p.m. ETNew York, NY Goldman Sachs 47th Annual Global Healthcare Conference Wednesday, June 10, 2026Fireside chat at 8:00 a.m. ETMiami Beach, FL A webcast of the fireside chats will be available via the Events section of the Altimmune website. About AltimmuneAltimmune is a late clinical-stage biopharmaceutical co

    5/27/26 8:30:00 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    New IMPACT Phase 2b Data Highlight Concurrent Improvements Across Multiple Non-Invasive Markers and qFibrosis-Measured Fibrosis Regression with Pemvidutide in MASH at EASL 2026

    Concurrent improvement across key non-invasive tests underscores convergence of pemvidutide effects on MASH disease activity and fibrosis AI-based digital pathology analyses further demonstrate antifibrotic effects of pemvidutide at 24 weeks GAITHERSBURG, Md., May 27, 2026 (GLOBE NEWSWIRE) -- Altimmune, Inc. (NASDAQ:ALT), a late clinical-stage biopharmaceutical company developing pemvidutide to address serious liver diseases, today announced that new analyses of data from the IMPACT Phase 2b trial demonstrated that treatment with pemvidutide, an investigational, balanced 1:1 glucagon/GLP-1 dual receptor agonist, is associated with concurrent improvements across multiple non-invasive tes

    5/27/26 8:00:00 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $ALT
    Insider Trading

    Insider transactions reveal critical sentiment about the company from key stakeholders. See them live in this feed.

    View All

    SEC Form 4 filed by Director Lawver Teri L

    4 - Altimmune, Inc. (0001326190) (Issuer)

    5/1/26 4:23:16 PM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 4 filed by Director Sohn Catherine A.

    4 - Altimmune, Inc. (0001326190) (Issuer)

    5/1/26 4:20:49 PM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 4 filed by Director Jorkasky Diane

    4 - Altimmune, Inc. (0001326190) (Issuer)

    5/1/26 4:18:40 PM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $ALT
    Insider Purchases

    Insider purchases reveal critical bullish sentiment about the company from key stakeholders. See them live in this feed.

    View All

    Chief Financial Officer Weaver Gregory L bought $17,700 worth of shares (5,000 units at $3.54), increasing direct ownership by 22% to 28,078 units (SEC Form 4)

    4 - Altimmune, Inc. (0001326190) (Issuer)

    3/9/26 7:05:04 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    President and CEO Durso Jerome Benedict bought $70,790 worth of shares (20,000 units at $3.54), increasing direct ownership by 160% to 32,500 units (SEC Form 4)

    4 - Altimmune, Inc. (0001326190) (Issuer)

    3/9/26 7:00:05 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Director Pisano Wayne bought $20,410 worth of shares (5,000 units at $4.08), increasing direct ownership by 59% to 13,498 units (SEC Form 4)

    4 - Altimmune, Inc. (0001326190) (Issuer)

    1/9/26 4:10:05 PM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $ALT
    SEC Filings

    View All

    Amendment: SEC Form SCHEDULE 13G/A filed by Altimmune Inc.

    SCHEDULE 13G/A - Altimmune, Inc. (0001326190) (Subject)

    5/15/26 4:15:13 PM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form S-8 filed by Altimmune Inc.

    S-8 - Altimmune, Inc. (0001326190) (Filer)

    5/13/26 4:17:43 PM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 10-Q filed by Altimmune Inc.

    10-Q - Altimmune, Inc. (0001326190) (Filer)

    5/13/26 4:13:42 PM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $ALT
    Analyst Ratings

    Analyst ratings in real time. Analyst ratings have a very high impact on the underlying stock. See them live in this feed.

    View All

    Altimmune upgraded by Goldman with a new price target

    Goldman upgraded Altimmune from Sell to Neutral and set a new price target of $2.50

    4/24/26 7:59:47 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Truist initiated coverage on Altimmune with a new price target

    Truist initiated coverage of Altimmune with a rating of Buy and set a new price target of $12.00

    3/18/26 4:00:13 PM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Barclays initiated coverage on Altimmune with a new price target

    Barclays initiated coverage of Altimmune with a rating of Overweight and set a new price target of $20.00

    1/28/26 7:15:18 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $ALT
    Leadership Updates

    Live Leadership Updates

    View All

    Altimmune Announces CEO Transition and Succession Plan

    Jerry Durso, accomplished industry leader, to succeed Vipin Garg, Ph.D. as Chief Executive Officer Transition follows seven years of strong leadership by Dr. Garg GAITHERSBURG, Md., Dec. 01, 2025 (GLOBE NEWSWIRE) -- Altimmune, Inc. (NASDAQ:ALT), a late clinical-stage biopharmaceutical company developing novel peptide-based therapeutics for liver and metabolic diseases, today announced a CEO succession plan under which Vipin Garg, Ph.D. will step down as the Company's President and Chief Executive Officer effective January 1, 2026. Altimmune's Chairman of the Board, Jerry Durso, will assume the role of President and Chief Executive Officer and retain his position as Chairman. To facilitat

    12/1/25 7:30:00 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Altimmune Appoints Industry Veteran Christophe Arbet-Engels, M.D., PhD as Chief Medical Officer to Drive Next Phase of Clinical Development of Pemvidutide

    Seasoned clinical leader to oversee Phase 3 development of pemvidutide in MASH Dr. Arbet-Engels has led late-stage development, regulatory approvals and commercial launches for multiple successful franchises GAITHERSBURG, Md., Sept. 29, 2025 (GLOBE NEWSWIRE) -- Altimmune, Inc. (NASDAQ: ALT), a late clinical-stage biopharmaceutical company developing novel peptide-based therapeutics for liver and cardiometabolic diseases, today announced the appointment of Christophe Arbet-Engels, MD, PhD as Chief Medical Officer, effective October 1, 2025. Dr. Arbet-Engels joins the Company with more than 30 years of experience spanning industry, academia and private practice, and will lead the ongoing c

    9/29/25 7:30:11 AM ET
    $ALT
    $XFOR
    Biotechnology: Pharmaceutical Preparations
    Health Care
    Biotechnology: Biological Products (No Diagnostic Substances)

    Altimmune Appoints Accomplished Commercial Executive Linda M. Richardson as Chief Commercial Officer

    GAITHERSBURG, Md., Sept. 15, 2025 (GLOBE NEWSWIRE) -- Altimmune, Inc. (NASDAQ:ALT), a late clinical-stage biopharmaceutical company developing novel peptide-based therapeutics for liver and cardiometabolic diseases, today announced the appointment of Linda M. Richardson to the role of Chief Commercial Officer, effective September 16, 2025. Ms. Richardson joins the Company with more than 30 years of experience in sales and marketing, commercial, corporate and business development across a range of therapeutic areas, including metabolic disease, hepatology, cardiovascular and addiction medicine. During her career, she has led multiple product launches, built successful commercial franchises

    9/15/25 7:30:00 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $ALT
    Financials

    Live finance-specific insights

    View All

    Altimmune to Report First Quarter 2026 Financial Results and Provide Business Update on May 13, 2026

    GAITHERSBURG, Md., May 06, 2026 (GLOBE NEWSWIRE) -- Altimmune, Inc. (NASDAQ:ALT), a late clinical-stage biopharmaceutical company developing pemvidutide to address serious liver diseases, today announced that it will report its first quarter 2026 financial results on Wednesday, May 13, 2026. Altimmune management will host a conference call at 8:30 a.m. ET on May 13 to discuss the financial results and provide a business update. The conference call will be webcast live on Altimmune's Investor Relations website at https://ir.altimmune.com/investors. Participants who would like to join the call may register here to receive dial-in numbers and a unique PIN. A replay will be available on the

    5/6/26 7:30:00 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Altimmune to Report Fourth Quarter and Full Year 2025 Financial Results and Provide Business Update on March 5, 2026

    GAITHERSBURG, Md., Feb. 26, 2026 (GLOBE NEWSWIRE) -- Altimmune, Inc. (NASDAQ:ALT), a late clinical-stage biopharmaceutical company developing pemvidutide to address serious liver diseases, today announced that it will report its fourth quarter 2025 financial results on Thursday, March 5, 2026. Altimmune management will host a conference call at 8:30 a.m. ET on March 5 to discuss the financial results and provide a business update. The conference call will be webcast live on Altimmune's Investor Relations website at https://ir.altimmune.com/investors. Participants who would like to join the call may register here to receive dial-in numbers and a unique PIN. A replay will be available on t

    2/26/26 7:30:00 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Altimmune Announces that Pemvidutide Achieved Key Measures of Success at 48 Weeks in IMPACT Phase 2b MASH Trial

    Improvements observed in key non-invasive markers of fibrosis across treatment arms versus placebo, with continued reductions from 24-week timepoint Additional weight loss from 24 to 48 weeks with 1.8 mg dose, without plateauing Favorable tolerability profile of pemvidutide preserved at 48 weeks, reinforced by low treatment-related discontinuation rate End-of-Phase 2 meeting with FDA supports advancing to registrational Phase 3 trial in MASH patients with moderate to advanced liver fibrosis Conference call to be held today at 8:00 a.m. ET GAITHERSBURG, Md., Dec. 19, 2025 (GLOBE NEWSWIRE) -- Altimmune, Inc. (NASDAQ:ALT), a late clinical-stage biopharmaceutical company developing thera

    12/19/25 6:30:00 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    $ALT
    Large Ownership Changes

    This live feed shows all institutional transactions in real time.

    View All

    Amendment: SEC Form SC 13G/A filed by Altimmune Inc.

    SC 13G/A - Altimmune, Inc. (0001326190) (Subject)

    11/14/24 11:58:56 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Amendment: SEC Form SC 13G/A filed by Altimmune Inc.

    SC 13G/A - Altimmune, Inc. (0001326190) (Subject)

    10/17/24 11:16:51 AM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Amendment: SEC Form SC 13G/A filed by Altimmune Inc.

    SC 13G/A - Altimmune, Inc. (0001326190) (Subject)

    10/16/24 4:21:16 PM ET
    $ALT
    Biotechnology: Pharmaceutical Preparations
    Health Care