Every Form 4 that MENTOR CAPITAL INC (MNTR) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow MNTR and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full MNTR filings page.
Mentor Capital, Inc. Chief Executive Officer Chester Billingsley bought a total of 2,000 shares of common stock in open-market purchases, paying $0.055 and $0.054 per share. Following these trades, he directly owns 9,113,403 common shares and holds Series D warrants covering 47,274 additional shares at a $0.02 exercise price.
Mentor Capital, Inc. Chief Executive Officer and 10% owner Chester Billingsley reported a series of open-market purchases of the company’s common stock. On three trading days, he bought a total of 4,000 shares at prices between $0.060 and $0.062 per share.
Following these transactions, he directly owns 9,111,403 shares of common stock. He also holds Series D Warrants exercisable at $0.020 per share for 47,274 underlying common shares, which are scheduled to expire on May 11, 2038. The reported purchases represent a small addition relative to his existing stake.
Mentor Capital, Inc. Chief Executive Officer Chester Billingsley significantly increased his direct common stock holdings through a preferred share conversion and a small open-market purchase. On April 3, 2026, he converted 11 Series Q Convertible Preferred Shares into 5,906,107 shares of common stock at a stated common stock price of $0.0588 per share, bringing his direct common stock position to 9,106,506 shares.
Those 11 preferred shares had previously been purchased on January 12, 2026 for a total of $204,488 at $18,590 per preferred share, with conversion terms defined in the Series Q Certificate of Designation. On April 7, 2026, he then made an additional open-market purchase of 897 common shares at $0.063 per share, raising his direct common stock ownership to 9,107,403 shares.
Mentor Capital, Inc. director and Chief Executive Officer Chester Billingsley reported a small open-market purchase of 3 shares of common stock at $0.065 per share. After this trade, he directly holds 3,200,399 common shares.
He also holds Series D Warrants exercisable at $0.0200 per share for 47,274 underlying common shares until May 11, 2038, and Series Q Preferred Shares that are convertible into common stock at no additional cost. On March 31, 2026, 11 Series Q Convertible Preferred Shares were eligible to be converted into 3,607,722 common shares.
Mentor Capital, Inc. Chief Executive Officer and major shareholder Chester Billingsley reported open-market purchases of the company’s common stock. He bought 3,000 shares on March 25, 2026 at $0.07 per share and 1,100 shares on March 26, 2026 at $0.08 per share, totaling 4,100 shares.
Following these transactions, he directly holds 3,200,396 common shares. He also holds Series D Warrants exercisable at $0.02 per share for 47,274 underlying common shares until May 11, 2038, and 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 Chester Billingsley reported open-market purchases of the company’s common stock. He bought 1,300 shares on March 19, 2026 at $0.0775 per share and 1,000 shares on March 20, 2026 at $0.08 per share, totaling 2,300 shares.
After these trades he directly owns 3,196,296 common shares. He also directly holds Series D Warrants exercisable at $0.02 per share for 47,274 underlying common shares expiring on May 11, 2038, and Series Q Preferred Shares that are convertible into 2,592,159 common shares at no additional cost, with no stated expiration.
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.
Mentor Capital, Inc. director, chief executive officer, and 10% owner Chester Billingsley reported small open-market purchases of the company’s common stock. He bought 600 shares on January 26, 2026 at $0.0845 per share and 1,400 shares on January 27, 2026 at $0.0849 per share, bringing his directly held common shares to 3,167,296.
He also directly holds 47,274 Series D Warrants exercisable for common stock from April 11, 2000 until May 11, 2038, and Series Q Preferred Shares that are convertible into common stock at no additional cost. As of December 31, 2025, 11 Series Q Convertible Preferred Shares were eligible to be converted into 2,592,159 common shares.
Mentor Capital, Inc. insider activity shows open‑market share purchases and sizable convertible holdings. Chief Executive Officer, director, and 10% owner Chester Billingsley bought 1,000 shares of common stock at $0.089 on January 20, 2026, 1,000 shares at $0.09 on January 21, 2026, and 1,800 shares at $0.087 on January 22, 2026. After these trades, he directly owned 3,165,296 common shares.
The filing also lists 47,274 Series D warrants with a $0.02 exercise price, exercisable into common stock from April 11, 2000 until May 11, 2038. In addition, 11 Series Q Preferred Shares were outstanding, which, as of December 31, 2025, were eligible to be converted into 2,592,159 common shares at no additional cost, with no stated expiration for the preferred shares.
Mentor Capital, Inc. insider Chester Billingsley, the chief executive officer, director, and a more than 10% owner, reported purchases of both preferred and common stock. On January 12, 2026, he bought 1,200 shares of common stock at $0.088 per share, bringing his directly held common stock to 3,161,496 shares.
On the same date, he also acquired 11 Series Q Convertible Preferred Shares from a third party for a total of $204,488.40, or $18,589.85 per share. According to the filing, these 11 Series Q Preferred Shares were eligible as of December 31, 2025 to be converted into 2,592,159 common shares, can be converted at no additional cost, and have no expiration date. He also directly holds 47,274 Series D warrants exercisable for common stock.
Mentor Capital, Inc. reported that its Chief Executive Officer, director, and 10% owner Chester Billingsley bought additional common shares in early January 2026. He purchased 2,000 shares of common stock on January 6, 2026 at $0.089 per share and another 2,000 shares on January 7, 2026 at $0.0939 per share. After these open-market purchases, he directly owned 3,160,296 shares of Mentor Capital common stock. The report also lists his direct holding of 47,274 Series D warrants with an exercise price of $0.02 per share, exercisable beginning April 11, 2000 and expiring on May 11, 2038.
Mentor Capital, Inc. director, chief executive officer, and 10% owner Chester Billingsley reported open market purchases of the company’s common stock. On 12/30/2025, he bought 1,600 shares at $0.0802 per share, and on 12/31/2025 he bought an additional 400 shares at $0.098 per share. Following these transactions, he beneficially owned 3,156,296 shares of Mentor Capital common stock in direct form. The filing also shows he directly holds 47,274 Series D warrants with a $0.02 exercise price, exercisable from 04/11/2000 until 05/11/2038, each warrant relating to one share of common stock.
Mentor Capital, Inc. insider activity shows small open‑market common stock purchases by a senior leader. A reporting person who is a director, chief executive officer, and 10% owner bought 1,500 shares of common stock on 12/26/2025 at $0.098 per share and 500 shares on 12/29/2025 at $0.081 per share in direct ownership. After these transactions, this person directly beneficially owns 3,154,296 common shares.
The reporting person also directly holds 47,274 Series D warrants with an exercise price of $0.02 per share, exercisable from 04/11/2000 until 05/11/2038, each linked to one share of common stock.
Mentor Capital, Inc. insider Chester Billingsley, who serves as Chief Executive Officer, director, and a 10% owner, reported a small open-market purchase of company stock. On 12/22/2025, he bought 2,000 shares of common stock at a price of $0.0879 per share. Following this transaction, he directly beneficially owns 3,152,296 shares of Mentor Capital common stock.
The filing also lists Billingsley’s derivative holdings, including 47,274 Series D warrants with a conversion or exercise price of $0.02 per share. These warrants are exercisable from 04/11/2000 until 05/11/2038 and are exercisable into 47,274 shares of Mentor Capital common stock.
Mentor Capital, Inc. insider Chester Billingsley, who is a director, Chief Executive Officer, and a 10% owner, reported open-market purchases of the company’s common stock. On 12/17/2025, he bought 700 shares at $0.098 per share, and on 12/18/2025, he bought 1,000 shares at $0.0848 per share. Following these transactions, he beneficially owned 3,150,296 shares of Mentor Capital common stock in direct ownership.
In addition to the common shares, Billingsley reported holding Series D Warrants with an exercise price of $0.02 per share, covering 47,274 shares of Mentor Capital common stock. These warrants are shown as exercisable from 04/11/2000 and expiring on 05/11/2038, and he owned 47,274 derivative securities directly after the reported transactions.
Mentor Capital, Inc. director, chief executive officer, and 10% owner Chester Billingsley reported open‑market purchases of the company’s common stock. On 12/12/2025, he bought 1,500 shares at $0.099 per share, on 12/15/2025 he bought 1,000 shares at $0.0834, and on 12/16/2025 he bought 1,300 shares at $0.10. Following these transactions, he directly beneficially owned 3,148,596 common shares. He also holds 47,274 Series D warrants with a $0.02 exercise price, exercisable since 04/11/2000 and expiring on 05/11/2038, each linked to one share of common stock.
Mentor Capital, Inc. insider buying: Chester Billingsley, the company’s Chief Executive Officer, director, and more than 10% owner, reported open-market purchases of Mentor Capital common stock. On 12/02/2025, he bought 1,300 shares at a price of $0.0916 per share, and on 12/04/2025 he bought an additional 500 shares at $0.0912 per share, both recorded as acquisitions. Following these transactions, he beneficially owned 3,144,796 shares of Mentor Capital common stock directly. He also held 47,274 Series D warrants exercisable at $0.02 per share, with an expiration date of 05/11/2038, each warrant linked to underlying Mentor Capital common shares.
Mentor Capital, Inc. director, chief executive officer and 10% owner Chester Billingsley reported open-market purchases of the company’s common stock. He bought 1,000 shares on 11/26/2025 at $0.0994 per share and 700 shares on 12/01/2025 at $0.1015 per share, bringing his directly held common stock to 3,142,996 shares. He also reports holding 47,274 Series D warrants with a $0.02 exercise price, exercisable since 04/11/2000 and expiring on 05/11/2038, each linked to one share of common stock.
Mentor Capital, Inc. insider and CEO Chester Billingsley, who is also a director and 10% owner, reported buying additional common stock. On 11/24/2025, he purchased 2,000 shares of Mentor Capital common stock at a price of $0.099 per share in an open market purchase. Following this transaction, he beneficially owns 3,141,296 common shares directly. The filing also shows Series D warrants with an exercise price of $0.02 per share, covering 47,274 shares of common stock, which are exercisable from 04/11/2000 until 05/11/2038.
Mentor Capital (MNTR): insider share purchases disclosed. CEO, director and 10% owner Chester Billingsley reported open‑market buys of 1,300 shares at $0.1016 on 11/10/2025 and 500 shares at $0.1092 on 11/11/2025. Following these trades, his direct beneficial ownership was 3,139,296 shares. He also holds 47,274 Series D warrants, exercisable from 04/11/2000 until 05/11/2038 at an exercise price of $0.02 per share.
Mentor Capital, Inc. (MNTR) insider activity: the reporting person, identified as Chief Executive Officer, Director, and 10% Owner, reported open-market purchases of common stock. On 11/06/2025, 1,000 shares were bought at $0.0999, and on 11/10/2025, 200 shares were bought at $0.0989.
Following these transactions, the insider directly held 3,137,496 common shares. The filing also lists 47,274 Series D Warrants with an exercise price of $0.02, exercisable from 04/11/2000 and expiring on 05/11/2038.
Mentor Capital (MNTR) reported an insider share purchase. CEO, director, and 10% owner Chester Billingsley bought 2,000 shares of common stock on November 3, 2025 at $0.106 per share. Following this transaction, he directly owns 3,136,296 shares.
He also directly holds 47,274 Series D warrants with a $0.02 exercise price, exercisable since April 11, 2000 and expiring on May 11, 2038.
Mentor Capital (MNTR) CEO, director, and 10% owner Chester Billingsley reported open‑market purchases of common stock. He bought 500 shares at $0.1028 and 1,000 shares at $0.11 on 10/29/2025, and 1,500 shares at $0.1024 on 10/30/2025. Following these transactions, his directly held common stock totaled 3,134,296 shares. He also holds Series D warrants exercisable at $0.02, covering 47,274 shares of common stock, with an expiration date of 05/11/2038.
Mentor Capital (MNTR) reported insider open‑market purchases by CEO, Director, and 10% owner Chester Billingsley. He bought 1,000 shares at $0.105 on 10/23/2025, 500 shares at $0.1079 on 10/24/2025, and 1,500 shares at $0.1042 on 10/27/2025, totaling 3,000 shares.
Following these trades, he directly beneficially owns 3,131,296 common shares. He also holds Series D Warrants exercisable at $0.02 for 47,274 underlying shares, exercisable since 04/11/2000 and expiring on 05/11/2038.
Mentor Capital, Inc. (MNTR) CEO, Director, and 10% owner Chester Billingsley reported open‑market common stock purchases. He bought 19,000 shares at $0.1119 on 10/20/2025, 10,000 at $0.1051 and 29,000 at $0.0999 on 10/21/2025, and 2,000 at $0.0975 on 10/22/2025, totaling 60,000 shares. Following these transactions, his direct beneficial ownership stands at 3,128,296 shares.
He also reports holding 47,274 Series D Warrants with a $0.02 exercise price, exercisable since 04/11/2000 and expiring on 05/11/2038, each underlying one share of common stock.
Mentor Capital (MNTR) filed a Form 4 showing CEO, director, and 10% owner Chester Billingsley bought common stock in three open‑market transactions. He purchased 3,150 shares at $0.1049 on 10/15/2025, 16,850 shares at $0.1005 on 10/16/2025, and 17,000 shares at $0.1098 on 10/17/2025. Following these trades, he directly owned 3,068,296 shares.
He also holds Series D Warrants exercisable at $0.02, covering 47,274 shares of common stock, with an expiration date of 05/11/2038.
Mentor Capital (MNTR) CEO, Director, and 10% Owner Chester Billingsley reported open‑market stock purchases. He bought 4,976 shares on 10/09/2025, 11,000 on 10/10/2025, 14,000 on 10/13/2025, and 5,000 on 10/14/2025 at prices between $0.1199 and $0.135. Following these transactions, he beneficially owns 3,031,296 shares, held directly.
The filing also lists Series D Warrants with an exercise price of $0.02, expiring 05/11/2038, covering 47,274 underlying common shares.
Mentor Capital director and 10% owner Chester Billingsley reported purchases of common stock across 10/07/2025–10/09/2025, acquiring 9,355, 20,000 and 24 shares at prices of $0.954, $0.999 and $0.10 respectively. Following these purchases his direct beneficial ownership is 2,996,320 shares. He also holds 47,274 Series D warrants exercisable into common stock through 05/11/2038.
Mentor Capital (MNTR) CEO, director and 10% owner Chester Billingsley reported buying 15,645 common shares on 10/01/2025 at $0.0976. Following the trade, he directly beneficially owns 2,966,941 shares.
He also reports 47,274 Series D warrants with a $0.02 exercise price, currently exercisable and expiring 05/11/2038.
Insider transactions reported for Mentor Capital, Inc. (MNTR). Chester Billingsley, CEO, director and >10% owner, purchased common stock in three open-market transactions on 09/26/2025, 09/29/2025 and 09/30/2025, acquiring 12,000, 13,000 and 12,000 shares respectively at prices of $0.089, $0.089 and $0.0995. Following these purchases his beneficial ownership increased to 2,951,296 shares. He also holds 47,274 common shares underlying Series D warrants exercisable through 05/11/2038.
Chester Billingsley, Mentor Capital, Inc. CEO and director, reported two open-market purchases: 12,000 common shares at $0.089 on 09/24/2025 and 13,000 common shares at $0.0884 on 09/25/2025, bringing his reported direct beneficial ownership to 2,914,296 shares. He also holds 47,274 Series D warrants exercisable at $0.02, expiring 05/11/2038. Transactions are reported on Form 4 and reflect direct ownership.
Chester Billingsley, CEO, director and 10% owner of Mentor Capital, Inc. (MNTR), reported multiple purchases of common stock in September 2025. He acquired 17,000 shares at $0.088 on 09/19/2025, 5,000 shares at $0.0838 on 09/19/2025, 25,000 shares at $0.0885 on 09/22/2025, and 25,000 shares at $0.0889 on 09/23/2025, bringing his total common stock holdings to 2,889,296 shares. He also holds 47,274 Series D warrants exercisable into common stock, with an exercise price of $0.02 and expiration 05/11/2038.