Welcome to our dedicated page for Mentor Capital SEC filings (Ticker: MNTR), 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.
Mentor Capital, Inc. filings document its OTCQB common stock registration and public-company reporting matters. Recent 8-K disclosures cover changes in the company's independent registered public accounting firms, including board and audit committee approvals, auditor letters, and statements regarding disagreements or reportable events under Regulation S-K.
The filing record also includes Form 12b-25 notices related to annual-report timing, with disclosures about the Form 10-K reporting period and the company's explanation for delayed completion. These filings center on reporting status, governance procedures, auditor relationships, and the Section 12(g) common stock identified under the MNTR trading symbol.
Mentor Capital, Inc. Chief Executive Officer and 10% owner Chester Billingsley reported open-market purchases of the company’s Common Stock. He bought 900 shares at $0.0833 per share on March 16, 2026 and 700 shares at $0.0839 per share on March 18, 2026, bringing his direct Common Stock holdings to 3,193,996 shares.
He also reports direct holdings of Series D Warrants exercisable at $0.0200 per share for 47,274 underlying Common shares, expiring on May 11, 2038, and Series Q Preferred Shares convertible into 2,592,159 Common shares at no additional cost. The Series Q Preferred Shares have no expiration date and are convertible according to a quarterly calculated conversion value and a conversion price based on 105% of the Common Stock closing price.
Mentor Capital, Inc. Chief Executive Officer and 10% owner Chester Billingsley reported open-market purchases of a total of 3,550 shares of Common Stock on March 11–13, 2026, at prices between $0.0759 and $0.0835 per share.
After these trades, he directly holds 3,192,396 Common shares. He also directly holds Series D Warrants exercisable at $0.02 per share for 47,274 underlying Common shares, and Series Q Preferred Shares that were eligible, as of December 31, 2025, to convert into 2,592,159 shares of Common Stock at no additional cost.
Mentor Capital, Inc. Chief Executive Officer and major shareholder Chester Billingsley reported open-market purchases of a total of 1,750 shares of common stock, at prices between $0.0809 and $0.0840 per share. Following these trades, he directly owns 3,188,846 shares of the company’s common stock.
The filing also notes his direct holdings of Series D Warrants and Series Q Preferred Shares. According to the disclosure, on December 31, 2025, 11 Series Q Convertible Preferred Shares were eligible to be converted into 2,592,159 shares of Mentor Capital common stock at no additional cost.
Mentor Capital, Inc. Chief Executive Officer Chester Billingsley bought 2,400 shares of common stock in open‑market purchases at about $0.083 per share, increasing his direct holdings to 3,187,096 shares. The filing also lists his direct holdings of Series D warrants and Series Q preferred shares, which are convertible into common stock under defined terms.
Mentor Capital, Inc. Chief Executive Officer and director Chester Billingsley purchased 5,300 shares of Common Stock in open-market transactions, at prices between $0.0835 and $0.0844 per share on February 25–27, 2026.
After these trades, he directly owned 3,184,696 Common shares, plus 47,274 Series D Warrants and Series Q Preferred Shares that, as of December 31, 2025, were eligible to be converted into 2,592,159 shares of Common Stock at no additional cost.
Mentor Capital, Inc. Chief Executive Officer Chester Billingsley reported an open-market purchase of 2,550 shares of common stock at $0.088 per share, increasing his directly held common stock to 3,179,396 shares.
He also directly holds 47,274 Series D warrants and 2,592,159 Series Q Preferred Shares as of the reported date. Footnotes explain that Series Q Preferred Stock is convertible into common stock based on a quarterly calculated conversion value and a conversion price set at 105% of the company’s common stock closing price. As of December 31, 2025, 11 Series Q Convertible Preferred Shares were eligible to be converted into 2,592,159 shares of common stock.
Billingsley Chester reported open-market purchase transactions in a Form 4 filing for MNTR. The filing lists transactions totaling 2,550 shares at a weighted average price of $0.09 per share. Following the reported transactions, holdings were 3,176,846 shares.
Mentor Capital, Inc.'s chief executive officer, director, and 10% owner Chester Billingsley reported open-market purchases of the company’s common stock. On February 6, 2026 he bought 800 shares at $0.091 each, and on February 9, 2026 he bought 1,198 shares at $0.089, bringing his directly held common stock to 3,174,296 shares.
He also reports derivative holdings. Series D warrants are exercisable at $0.02 per share for 47,274 shares of common stock from April 11, 2000 until May 11, 2038. In addition, 11 Series Q preferred shares were eligible on December 31, 2025 to convert, at no additional cost, into 2,592,159 shares of common stock under a formula tied to asset value and the common stock’s closing price.
Mentor Capital, Inc. Chief Executive Officer, director, and 10% owner Chester Billingsley reported open‑market purchases of the company’s common stock. He bought 2,000 shares at $0.09, 2 shares at $0.085, and 1,000 shares at $0.0848.
After these trades, he directly holds 3,172,298 common shares. He also holds Series D warrants exercisable for 47,274 common shares and 11 Series Q preferred shares that were eligible, as of December 31, 2025, to convert into 2,592,159 common shares at no additional cost.
Mentor Capital, Inc. Chief Executive Officer, director, and 10% owner Chester Billingsley reported open‑market purchases of the company’s common stock. On January 29, 2026 he bought 900 shares at $0.09, and on February 2, 2026 he bought 1,100 shares at $0.0884, increasing his direct common stock holdings to 3,169,296 shares.
He also holds Series D warrants exercisable into 47,274 shares of common stock and Series Q preferred shares2,592,159 common shares at no additional cost, with no expiration date.