Welcome to our dedicated page for Anterix SEC filings (Ticker: ATEX), 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.
Anterix Inc. filings document the company’s 900 MHz private wireless broadband spectrum business, including material-event reports on spectrum license sale agreements, operating and financial results, Regulation FD updates, and capital-structure disclosures. The records include disclosures tied to broadband license sales, narrowband-to-broadband license exchanges, spectrum clearing costs, contracted proceeds, and the Demonstrated Intent key performance indicator.
The company’s SEC filings also cover governance matters, executive compensation and severance arrangements, shareholder voting matters, risk factors, and regulatory developments affecting broadband use of the 900 MHz band. Material agreements involving its wholly owned subsidiary, PDV Spectrum Holding Company, LLC, are documented through Form 8-K exhibits and related event disclosures.
Director William Heard of Anterix Inc. reported a bona fide gift of 1,887 shares of Common Stock on December 29, 2025, as a charitable donation to a Donor Advised Fund. After this transfer, he holds 9,365 shares directly and 1,716,738 shares indirectly through funds managed by Heard Capital LLC, for which beneficial ownership is disclaimed except to the extent of his pecuniary interest.
Anterix Inc. held its 2026 Annual Meeting of Stockholders virtually on August 4, 2026, with a quorum of 17,347,869 shares of common stock represented, or 90.06% of the 19,261,270 shares issued, outstanding and eligible to vote as of the June 11, 2026 record date.
Stockholders approved Amendment No. 2 to the Anterix Inc. 2023 Stock Plan, increasing the shares of common stock available for issuance under the plan by 1.0 million shares. All seven director nominees were elected. On a non-binding, advisory basis, stockholders approved executive compensation and supported holding future say-on-pay votes every one year. Stockholders also ratified the appointment of Deloitte & Touche LLP as independent registered public accounting firm for the fiscal year ending March 31, 2027.
Heard William reported acquisition or exercise transactions in this Form 4 filing.
Anterix Inc. director William Heard received a grant of 1,598 shares of Common Stock on August 4, 2026 at no cost. These restricted shares will vest on the earlier of the 2027 annual meeting of shareholders and August 4, 2027, under a Restricted Stock Agreement. Following the award, he directly holds 11,252 shares. A separate reported position shows 1,716,738 shares held by investment funds or accounts managed by Heard Capital LLC, for which he is the ultimate beneficial owner; both he and Heard Capital LLC disclaim beneficial ownership of those shares except to the extent of any pecuniary interest.
ALTMAN JEFFREY A reported acquisition or exercise transactions in this Form 4 filing.
Anterix Inc. director and ten percent owner Jeffrey A. Altman reported a grant of 1,598 shares of common stock on August 4, 2026 as compensation for his services as a non-employee director. The award will vest on the earlier of the 2027 annual shareholder meeting and August 4, 2027 under a Restricted Stock Agreement.
After this grant, Altman reported 124,492 shares of common stock held directly and 5,411,776 shares held indirectly through Owl Creek funds advised by Owl Creek Asset Management, L.P. Altman and the investment manager each disclaim beneficial ownership beyond their pecuniary interests in these securities.
YAZDI MAHVASH reported acquisition or exercise transactions in this Form 4 filing.
Anterix Inc. director Mahvash Yazdi received a grant of 1,598 shares of common stock on August 4, 2026, as a restricted stock award at $0.00 per share. These shares vest on the earlier of the 2027 annual shareholder meeting or August 4, 2027. Following the grant, she directly holds 21,005 shares, with additional indirect holdings of 250 shares through a family trust, where she disclaims beneficial ownership beyond her pecuniary interest, and 750 shares through a 401(k) plan. The transaction is reported as not pursuant to a Rule 10b5-1 trading plan.
Fleischhauer Mark reported acquisition or exercise transactions in this Form 4 filing.
Anterix Inc. director Mark Fleischhauer received a grant of 1,598 shares of common stock as a stock award. The shares vest on the earlier of the company’s 2027 Annual Meeting of shareholders and August 4, 2027, under a Restricted Stock Agreement, bringing his direct holdings to 14,367 shares.
Anterix Inc. director Leslie B. Daniels reported receiving a grant of 1,598 shares of common stock on August 4, 2026 as a restricted stock award. These shares will vest on the earlier of the 2027 Annual Meeting of shareholders and August 4, 2027, under a Restricted Stock Agreement.
Following this award, Daniels directly holds 56,077 Anterix shares, with additional indirect holdings of 2,000 shares by IRA and 5,000 shares by 401K. The award is a compensation-related acquisition and was not designated as made under a Rule 10b5-1 trading plan.
BlackRock, Inc. reports beneficial ownership of common stock of Antarix Inc. on a Schedule 13G. BlackRock indicates beneficial ownership of 999,278 shares of Antarex common stock, representing 5.1% of the class as of the reporting date.
BlackRock has sole voting power over 986,208 shares and sole dispositive power over 999,278 shares, with no shared voting or dispositive power. Various underlying clients have rights to dividends or sale proceeds, but no individual person is reported to hold more than five percent of Antarex’s outstanding common shares through these arrangements.
Anterix Inc. Chief Financial Officer Elena Marquez reported a tax-related share disposition. On 2026-07-13, 231 shares of common stock were withheld by the issuer at $100.96 per share to satisfy withholding obligations tied to partial vesting and settlement of restricted stock units. Following this non-market, tax-withholding disposition, Marquez holds 18,156 shares of Anterix common stock directly.
Anterix Inc. Chief Reg & Comm Officer Christopher Guttman-McCabe reported a Form 4 transaction involving a tax-withholding disposition of 1,516 shares of common stock at $100.96 per share on July 13, 2026. The shares were withheld by the company to satisfy withholding obligations related to the partial vesting and settlement of restricted stock units. After this withholding, he directly holds 76,291 shares of Anterix common stock.