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    Sionna Therapeutics Inc.

    Subscribe to $SION
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    IPO Year: 2025

    Exchange: NASDAQ

    Recent Analyst Ratings for Sionna Therapeutics Inc.

    DatePrice TargetRatingAnalyst
    12/1/2025$24.00Sector Perform → Underperform
    RBC Capital Mkts
    11/19/2025$50.00Buy
    BTIG Research
    9/3/2025$45.00Strong Buy
    Raymond James
    9/3/2025$22.00Sector Perform
    RBC Capital Mkts
    3/4/2025Buy
    TD Cowen
    3/4/2025$32.00Buy
    Stifel
    3/4/2025$45.00Buy
    Guggenheim
    See more ratings

    Sionna Therapeutics Inc. Press Releases

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    Sionna Therapeutics to Participate in Upcoming December Investor Conferences

    WALTHAM, Mass., Nov. 24, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, today announced that management will participate in fireside chats at the following upcoming investor events: 8th Annual Evercore Healthcare Conference on Wednesday, December 3rd, 2025, at 12:30 p.m. ET; andCiti 2025 Global Healthcare Conference on Thursday, December 4th, 2025, at 9:45 a.m. ET Live webcasts of the presentations will be avail

    11/24/25 7:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Reports Third Quarter 2025 Financial Results

    Initiated PreciSION CF Phase 2a proof-of-concept trial evaluating NBD1 stabilizer SION-719 as an add-on to standard of care in participants with cystic fibrosis Successfully completed drug-drug interaction study to support initiation of PreciSION CF Phase 2a Initiated Phase 1 trial evaluating NBD1 stabilizer SION-451 in proprietary dual combinations with SION-2222 and with SION-109 in healthy volunteers Topline data from both trials anticipated in mid-2026 Maintained strong cash position with approximately $325.0 million in cash and cash equivalents, expected to fund operations into 2028 WALTHAM, Mass., Nov. 05, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clini

    11/5/25 7:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics to Participate in Upcoming November Investor Conferences

    WALTHAM, Mass., Nov. 04, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, today announced that management will participate in fireside chats at the following upcoming investor events: Guggenheim 2nd Annual Healthcare Innovation Conference on Tuesday, November 11th, 2025, at 8:30 a.m. ET; andStifel 2025 Healthcare Conference on Wednesday, November 12th, 2025, at 8:00 a.m. ET Live webcasts of the presentations will

    11/4/25 8:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Announces Presentation of SION-719 and SION-451 Phase 1 Data and Poster of New Preclinical Data on the Impact of NBD1 Stabilizers on F508del-CFTR Half-Life at the 2025 North American Cystic Fibrosis Conference

    Phase 1 data of first-in-class NBD1 stabilizers, SION-719 and SION-451, demonstrated they were generally well tolerated and exceeded desired pharmacokinetic targets New preclinical data show that NBD1 stabilizers restored the half-life of F508del-CFTR up to wild-type levels WALTHAM, Mass., Oct. 24, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, today announced data presented at the 2025 North American Cystic Fi

    10/24/25 1:15:00 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Announces Initiation of PreciSION CF Phase 2a Trial Evaluating NBD1 Stabilizer, SION-719, When Added to Standard of Care in Participants with Cystic Fibrosis

    SION-719 is the first NBD1 stabilizer being evaluated in people living with cystic fibrosis Topline data expected in mid-2026 WALTHAM, Mass., Oct. 21, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, today announced initiation of the PreciSION CF Phase 2a proof-of-concept (POC) trial evaluating SION-719, a first-in-class nucleotide binding domain 1 (NBD1) stabilizer, when added to Trikafta® (elexacaftor/tezacaftor

    10/21/25 7:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics to Present Data at the 2025 North American Cystic Fibrosis Conference

    WALTHAM, Mass., Oct. 01, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, today announced that data will be presented at the 2025 North American Cystic Fibrosis Conference (NACFC) being held in Seattle, Washington on October 22-25, 2025. Details of the presentation and posters are as follows: Title: Safety, tolerability, and pharmacokinetics of novel NBD1 stabilizers SION-719 and SION-451 from two phase 1 first-in

    10/1/25 4:05:00 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Appoints Caroline Stark Beer as Chief Business Officer

    WALTHAM, Mass., Sept. 08, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, today announced the appointment of Caroline Stark Beer, MBA, as its Chief Business Officer (CBO). "We are delighted to welcome Caroline to our executive team at such a pivotal stage for Sionna," said Mike Cloonan, President and Chief Executive Officer of Sionna. "Caroline's exceptional experience, leadership, and value creation mindset will

    9/8/25 8:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics to Participate in Upcoming September Investor Conferences

    WALTHAM, Mass., Aug. 27, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, today announced that management will participate in fireside chats at the following upcoming investor events: Cantor Global Healthcare Conference 2025 in New York, NY on Wednesday, September 3rd, 2025, at 1:35 p.m. ET; andMorgan Stanley 23rd Annual Global Healthcare Conference in New York, NY on Monday, September 8th, 2025, at 7:00 a.m. ET.

    8/27/25 7:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Announces First Subjects Dosed in Phase 1 Trial Evaluating NBD1 Stabilizer, SION-451, in Proprietary Dual Combinations in Development for the Treatment of Cystic Fibrosis

    WALTHAM, Mass., Aug. 25, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, today announced that the first subjects have been dosed in a Phase 1 trial evaluating SION-451, a first-in-class nucleotide binding domain 1 (NBD1) stabilizer, in proprietary dual combinations with SION-2222 (galicaftor), a transmembrane domain 1 (TMD1)-directed CFTR corrector, and with SION-109, an intracellular loop 4 (ICL4)-directed CFTR co

    8/25/25 7:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Reports Second Quarter 2025 Financial Results

    Announced positive Phase 1 data for SION-719 and SION-451 demonstrating both first-in-class NBD1 stabilizers were generally well tolerated and exceeded pharmacokinetic targets Initiation of Phase 2a proof-of-concept trial of SION-719 as an add-on to standard of care in cystic fibrosis patients is on track for the second half of 2025 with topline data expected in mid-2026 Advancement of Phase 1 healthy volunteer trial of SION-451 in two proprietary dual combinations is on track for the second half of 2025 with topline data expected in mid-2026 Maintained strong cash position with approximately $337.3 million in cash and cash equivalents, expected to fund operations into 2028 WALTHAM, Mass

    8/11/25 7:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Inc. Analyst Ratings

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

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    Sionna Therapeutics downgraded by RBC Capital Mkts with a new price target

    RBC Capital Mkts downgraded Sionna Therapeutics from Sector Perform to Underperform and set a new price target of $24.00

    12/1/25 8:19:04 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    BTIG Research initiated coverage on Sionna Therapeutics with a new price target

    BTIG Research initiated coverage of Sionna Therapeutics with a rating of Buy and set a new price target of $50.00

    11/19/25 8:58:53 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Raymond James initiated coverage on Sionna Therapeutics with a new price target

    Raymond James initiated coverage of Sionna Therapeutics with a rating of Strong Buy and set a new price target of $45.00

    9/3/25 8:39:08 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    RBC Capital Mkts initiated coverage on Sionna Therapeutics with a new price target

    RBC Capital Mkts initiated coverage of Sionna Therapeutics with a rating of Sector Perform and set a new price target of $22.00

    9/3/25 8:38:58 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    TD Cowen initiated coverage on Sionna Therapeutics

    TD Cowen initiated coverage of Sionna Therapeutics with a rating of Buy

    3/4/25 8:27:05 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Stifel initiated coverage on Sionna Therapeutics with a new price target

    Stifel initiated coverage of Sionna Therapeutics with a rating of Buy and set a new price target of $32.00

    3/4/25 7:43:40 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Guggenheim initiated coverage on Sionna Therapeutics with a new price target

    Guggenheim initiated coverage of Sionna Therapeutics with a rating of Buy and set a new price target of $45.00

    3/4/25 7:43:20 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Inc. Insider Purchases

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

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    Large owner Tpg Gp A, Llc bought $950,400 worth of shares (60,000 units at $15.84) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    7/1/25 5:03:20 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Large owner Tpg Gp A, Llc converted options into 4,875,547 shares and bought $20,250,000 worth of shares (1,125,000 units at $18.00) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    2/12/25 5:21:33 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Inc. SEC Filings

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    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/24/25 8:22:56 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/21/25 4:24:21 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/21/25 4:21:36 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/21/25 4:19:58 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/21/25 4:17:45 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/20/25 4:40:44 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/20/25 4:35:53 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/20/25 4:34:35 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/20/25 4:30:25 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    SEC Form 144 filed by Sionna Therapeutics Inc.

    144 - Sionna Therapeutics, Inc. (0002036042) (Subject)

    11/19/25 5:21:14 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Inc. Insider Trading

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

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    Chief Legal Officer Fitzpatrick Jennifer exercised 10,250 shares at a strike of $6.11 and sold $415,330 worth of shares (10,250 units at $40.52) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    12/9/25 4:57:04 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Director Orbimed Advisors Llc sold $4,814,205 worth of shares (108,073 units at $44.55) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    11/26/25 6:45:41 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Director Thompson Peter A. sold $4,814,205 worth of shares (108,073 units at $44.55) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    11/26/25 6:41:57 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Director Ra Capital Management, L.P. sold $1,200,704 worth of shares (30,316 units at $39.61) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    11/24/25 5:43:18 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Director Ra Capital Management, L.P. sold $5,500,158 worth of shares (136,351 units at $40.34) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    11/19/25 8:43:43 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Director Ra Capital Management, L.P. sold $14,762,604 worth of shares (373,610 units at $39.51) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    10/28/25 9:05:46 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    President & CEO Cloonan Michael exercised 99,800 shares at a strike of $6.11 and sold $3,618,560 worth of shares (99,800 units at $36.26) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    10/22/25 5:39:46 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Director Booth Bruce sold $3,041,683 worth of shares (88,878 units at $34.22) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    10/21/25 5:12:03 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Director Booth Bruce sold $9,251,102 worth of shares (286,369 units at $32.30) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    10/20/25 9:39:54 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    President & CEO Cloonan Michael exercised 25,200 shares at a strike of $6.11 and sold $788,153 worth of shares (25,200 units at $31.28) (SEC Form 4)

    4 - Sionna Therapeutics, Inc. (0002036042) (Issuer)

    10/17/25 5:11:22 PM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Inc. Leadership Updates

    Live Leadership Updates

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    Sionna Therapeutics Appoints Caroline Stark Beer as Chief Business Officer

    WALTHAM, Mass., Sept. 08, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revolutionize the current treatment paradigm for cystic fibrosis (CF) by developing novel medicines that normalize the function of the cystic fibrosis transmembrane conductance regulator (CFTR) protein, today announced the appointment of Caroline Stark Beer, MBA, as its Chief Business Officer (CBO). "We are delighted to welcome Caroline to our executive team at such a pivotal stage for Sionna," said Mike Cloonan, President and Chief Executive Officer of Sionna. "Caroline's exceptional experience, leadership, and value creation mindset will

    9/8/25 8:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care

    Sionna Therapeutics Inc. Financials

    Live finance-specific insights

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    Sionna Therapeutics Announces Positive Phase 1 Data for NBD1 Stabilizers SION-719 and SION-451 and Advances Both Programs in Clinical Development for Cystic Fibrosis

    SION-719 and SION-451 were generally well tolerated and achieved desired pharmacokinetic targets that reinforce their potential as either an add-on to standard of care or in a Sionna dual combination Sionna plans to advance SION-719 to a Phase 2a proof-of-concept add-on to standard of care trial in cystic fibrosis patients, and SION-451 to a Phase 1 healthy volunteer dual combination trial Next trials to initiate in the second half of 2025 with topline data expected in mid-2026 Sionna to hold a conference call today at 8:00 a.m. ET WALTHAM, Mass., June 04, 2025 (GLOBE NEWSWIRE) -- Sionna Therapeutics, Inc. (NASDAQ:SION), a clinical-stage biopharmaceutical company on a mission to revo

    6/4/25 7:00:00 AM ET
    $SION
    Biotechnology: Pharmaceutical Preparations
    Health Care