{"url_path":"/sec/pulm/10-k/2026/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"10-K/A","doc_date":"2026-06-16","source_url":"https://www.sec.gov/Archives/edgar/data/1574235/0001493152-26-028902-index.html","accession_number":"0001493152-26-028902","cik":"0001574235","ticker":"PULM","issuer_name":"Pulmatrix, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1574235/0001493152-26-028902-index.html","primary_entity_key":"0001574235","primary_entity_name":"Pulmatrix, 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EXCHANGE COMMISSION**\n\n**Washington,\nD.C. 20549**\n\n \n\n**FORM\n10-K/A**\n\n**(Amendment No.\n1)**\n\n \n\n**(Mark\nOne)**\n\n \n\n☒\n**ANNUAL\nREPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**\n\n \n\n**For\nthe fiscal year ended December 31, 2025**\n\n \n\n**or**\n\n \n\n☐\n**TRANSITION\nREPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**\n\n \n\n**For\nthe transition period from ___________ to**__________\n\n \n\n**Commission\nfile number: 001-36199**\n\n \n\n**PULMATRIX,\nINC.**\n\n(Exact\nname of registrant as specified in its charter)\n\n \n\n**Delaware**\n \n**46-1821392**\n\n(State\nor other jurisdiction of\n\nincorporation\nor organization)\n\n \n\n(I.R.S.\nEmployer\n\nIdentification\nNo.)\n\n \n \n \n\n**945\nConcord Street, Suite 1217**\n\n**Framingham,\nMA**\n\n \n**01701**\n\n(Address\nof principal executive offices)\n \n(Zip\nCode)\n\n \n\n**(888)\n355-4440**\n\nRegistrant’s\ntelephone number, including area code\n\n** **\n\n**Securities\nregistered pursuant to Section 12(b) of the Exchange Act:**\n\n \n\n**Title\nof each class**\n \n**Trading\nSymbol(s)**\n \n**Name\nof each exchange on which registered**\n\n**Common\nStock, par value $0.0001 per share**\n \n**PULM**\n \n**The\nNasdaq Stock Market LLC**\n\n \n\n**Securities\nregistered pursuant to Section 12(g) of the Exchange Act: None**\n\n** **\n\nIndicate\nby check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐ No ☒\n\n \n\nIndicate\nby check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act. Yes ☐\nNo ☒\n\n \n\nIndicate\nby check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange\nAct of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)\nhas been subject to such filing requirements for the past 90 days. Yes ☒ No ☐\n\n \n\nIndicate\nby check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule\n405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant\nwas required to submit such files). Yes ☒ No ☐\n\n \n\nIndicate\nby check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting\ncompany or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer”,\n“smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.\n\n \n\nLarge\naccelerated filer\n☐\n \nAccelerated\nfiler\n☐\n\n \n \n \n \n \n\nNon-accelerated\nfiler\n☒\n \nSmaller\nreporting company\n☒\n\n \n \n \n \n \n\n \n \n \nEmerging\ngrowth company\n☐\n\n \n\nIf\nan emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying\nwith any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act ☐\n\n \n\nIndicate\nby check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness\nof its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered\npublic accounting firm that prepared or issued its audit report. Yes ☐ No ☒\n\n \n\nIf\nsecurities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant\nincluded in the filing reflect the correction of an error to previously issued financial statements. ☐\n\n \n\nIndicate\nby check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation\nreceived by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐\n\n \n\nIndicate\nby check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒\n\n \n\nThe\naggregate market value of the registrant’s voting and non-voting common equity held by non-affiliates computed by reference to\nthe price at which the common equity was last sold, as of June 30, 2025, the last business day of registrant’s most recently completed\nsecond fiscal quarter, was $25,200,594.\n\n \n\nAs\nof June 15, 2026, the registrant had 3,652,285 shares of common stock, par value $0.0001 per share, issued and outstanding.\n\n \n\n**DOCUMENTS\nINCORPORATED BY REFERENCE**\n\n \n\nNone.\n\n \n\n \n\n \n\n \n\n \n\n** **\n\n**EXPLANATORY NOTE**\n\n \n\nThis\nAmendment No. 1 on Form 10-K/A (this “Amendment No. 1”) to the Annual Report on Form 10-K of Pulmatrix, Inc. (the\n“Company”) for the fiscal year ended December 31, 2025, originally filed with the U.S. Securities and Exchange\nCommission (the “SEC”) on February 26, 2026 (the “Original Filing”), is being filed solely to correct a\ntypographical error in the date of the Report of Independent Registered Public Accounting Firm included in Part II, Item 8 of the\nOriginal Filing. In accordance with Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange\nAct”), the Company is also including the entire text of Part II, Item 8 of the Original Filing in this Amendment No. 1.\nHowever, there have been no changes to the text of such Part II, Item 8, other than the change stated in the first sentence of this\nparagraph.\n\n \n\nPursuant to the rules of the SEC, Part IV, Item\n15 has also been amended to contain the currently dated certifications from the Company’s principal executive officer and principal\nfinancial officer pursuant to Section 302 and Section 906 of the Sarbanes-Oxley Act of 2002 as Exhibits 31.1 and 32.1, respectively. As\nthis Amendment No. 1 does not contain or amend any disclosure with respect to Items 307 or 308 of Regulation S-K, paragraphs 4 and 5 of\nthe certifications pursuant to Section 302 have been omitted. Other than Exhibits 31.1 and 32.1, there have been no other changes to the\nexhibits filed with the Original Filing.\n\n \n\nExcept as described above or as otherwise expressly\nprovided by the terms of this Amendment No. 1, no other changes have been made to the Original Filing. This Amendment No. 1 continues\nto speak as of the date of the Original Filing, and the Company has not updated the disclosures contained therein to reflect any events\nthat occurred subsequent to the date of the Original Filing. This Amendment No. 1 should be read in conjunction with the Original Filing\nand with our filings with the SEC subsequent to the Original Filing. Capitalized terms used herein and not otherwise defined are defined\nas set forth in the Original Filing.\n\n \n\n \n\n \n\n \n\n**PULMATRIX,\nINC.**\n\n** **\n\n**TABLE\nOF CONTENTS**\n\n \n\n \n \n**Page\nNo.**\n\n \n \n \n\n**PART II**"}