Welcome to our dedicated page for MAIA Biotechnology SEC filings (Ticker: MAIA), 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.
MAIA Biotechnology, Inc. filings document the regulatory record for a clinical-stage oncology company developing ateganosine for non-small cell lung cancer. Form 8-K reports cover THIO-101 clinical updates, oncology conference materials, shareholder communications on the development pipeline, FDA Fast Track disclosure, and forward-looking risk language tied to investigational drug development.
The company’s filings also document capital structure and governance matters, including an underwritten common stock offering conducted under an effective Form S-3 shelf registration, the related underwriting agreement and use-of-proceeds disclosure, executive compensation actions, and annual meeting proxy matters such as director elections and auditor ratification.
MAIA Biotechnology’s chief executive officer, director and 10% owner Vlad Vitoc reported open‑market purchases of the company’s common stock and corrected prior share balances. On November 26, 2025, he bought 22,000 shares at a weighted average price of $1.0463 per share, and on November 28, 2025 he bought an additional 50,000 shares at a weighted average price of $1.1366 per share. Following these transactions, he directly owns 903,421 shares of MAIA common stock and has indirect beneficial ownership of 210,100 shares held by his spouse, for which he disclaims beneficial ownership except to the extent of his pecuniary interest. This Form 4 amendment corrects the previously reported total share balances for both his holdings and his spouse’s holdings.
MAIA Biotechnology (MAIA) insider Vlad Vitoc, the company’s Chief Executive Officer, director and a 10% owner, reported open-market purchases of MAIA common stock. On November 28, 2025, he bought 50,000 shares at a weighted average price of $1.1366 per share. On November 26, 2025, he bought an additional 22,000 shares at a weighted average price of $1.0463 per share.
After these transactions, Vitoc directly beneficially owns 881,421 shares of MAIA common stock and indirectly beneficially owns 210,000 shares through his spouse, for which he disclaims beneficial ownership except to the extent of his pecuniary interest.
MAIA Biotechnology, Inc. director Cristian Luput reported open-market purchases of the company’s common stock. On 11/26/2025, he bought 20,000 shares at a price of $1.0808 per share. On 11/28/2025, he purchased an additional 18,145 shares at a weighted average price of $1.1149 per share, with individual trades ranging from $1.1147 to $1.1192. After these transactions, he beneficially owned 437,628 shares of MAIA common stock, held directly.
MAIA Biotechnology director reports open-market stock purchase
Stan V. Smith, a director of MAIA Biotechnology, Inc., reported buying 15,000 shares of MAIA common stock on 11/26/2025. The purchase was made in the open market at a weighted average price of $1.0388 per share, with individual trades executed between $1.03 and $1.051. Following this transaction, Mr. Smith beneficially owned 1,364,289 shares of MAIA common stock, held indirectly through The Stan V. Smith Trust Dated 1993.
MAIA Biotechnology director reports open-market share purchase. A company director filed a Form 4 disclosing the acquisition of 10,000 shares of MAIA Biotechnology common stock on 11/25/2025. The shares were purchased at a price of $0.9785 per share. Following this transaction, the director beneficially owns 399,483 shares of MAIA common stock, held directly.
MAIA Biotechnology, Inc. reported an insider share purchase by its Chief Executive Officer, director and 10% owner Vlad Vitoc. On 11/25/2025, he bought 10,500 shares of common stock at a weighted average price of $0.9661 per share, with individual trades ranging from $0.9606 to $0.9745. After this transaction, he directly holds 831,421 common shares. An additional 210,000 shares are held by his spouse, which he reports as indirectly beneficially owned but disclaims ownership beyond his economic interest.
MAIA Biotechnology director reports insider share purchases. Director Stan V. Smith filed a Form 4 showing two open-market purchases of MAIA common stock. On 11/24/2025, he bought 10,000 shares at a weighted average price of $0.99, with individual trades ranging from $0.9675 to $0.9899. On 11/25/2025, he bought another 15,000 shares at a weighted average price of $0.98, with trades between $0.9550 and $1.05. Following these transactions, he beneficially owns 1,349,289 shares indirectly through The Stan V. Smith Trust Dated 1993.
MAIA Biotechnology CEO share purchases were reported by Vlad Vitoc, who serves as Chief Executive Officer, Director and 10% owner of MAIA Biotechnology, Inc. (MAIA). On 11/21/2025, he bought 1,800 shares of common stock at a weighted average price of $0.92 per share, and on 11/24/2025 he bought an additional 10,000 shares at a price of $0.9891 per share.
Following these transactions, Vitoc directly beneficially owned 820,921 shares of MAIA common stock. The filing also notes 210,100 shares beneficially owned by his spouse, for which he disclaims beneficial ownership except to the extent of his pecuniary interest. The weighted average disclosure indicates the 1,800-share purchase was executed in multiple trades within a narrow price range between $0.9128 and $0.9235.
MAIA Biotechnology, Inc. reported under an 8-K that it issued a press release titled “MAIA Biotechnology Highlights Ongoing Momentum of Ateganosine Clinical Program at SITC 2025.” The company uses this filing to formally share that update with the market and attaches the full press release as an exhibit, incorporating it by reference.
The disclosure is presented as an “Other Events” item, meaning it is an informational update rather than a financial report or major transaction. The company also includes standard cautionary language that statements about its development programs, including the Ateganosine clinical program, are forward-looking and subject to significant risks and uncertainties.
MAIA Biotechnology, Inc. reported that its Chief Executive Officer, Vlad Vitoc, presented on telomere-targeting efficacy at Romania’s 2025 Smart Diaspora Conference on Oncology Research and Innovation. The company issued a press release titled “MAIA Biotechnology CEO Presents Telomere Targeting Efficacy at Romania’s 2025 Smart Diaspora Conference on Oncology Research and Innovation,” which is attached as an exhibit and incorporated by reference.
The report also reiterates that any statements about future plans, development timelines, regulatory approvals, market potential, or other non-historical matters are forward-looking statements and subject to significant risks and uncertainties. MAIA highlights factors such as the progress and results of its preclinical and clinical studies, regulatory timing, manufacturing capabilities, market acceptance, market size and growth, and intellectual property protection as key areas that could cause actual outcomes to differ materially from these forward-looking comments.