David M. Kaye

Companies

• Birchtech Corp.Board member Mar 31, 2006 to now¹
• Birchtech Corp.Secretary Jul 9, 2020 to Jun 7, 2023²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• BBirchtech Corp. BCHT370,142 shares³$440.9K at $1.19Dec 12, 2025

As of each latest filing. The line shows shares held over time.

Recent filings

• Dec 12, 2025Shares withheld for tax 155,214 shares at $0.93 of Birchtech Corp.³
• Dec 12, 2025Exercised options 250,000 shares at $0.58 of Birchtech Corp.³
• Dec 11, 2023Shares withheld for tax 1,578 shares at $0.99 of Birchtech Corp.⁴
• Dec 11, 2023Exercised options 6,250 shares at $0.25 of Birchtech Corp.⁴
• Nov 30, 2023Shares withheld for tax 2,112 shares at $0.98 of Birchtech Corp.⁵
• Nov 30, 2023Exercised options 6,250 shares at $0.33 of Birchtech Corp.⁵
• Oct 31, 2023Shares withheld for tax 3,081 shares at $0.41 of Birchtech Corp.⁶
• Oct 31, 2023Exercised options 6,250 shares at $0.20 of Birchtech Corp.⁶
• Sep 29, 2023Shares withheld for tax 4,141 shares at $0.39 of Birchtech Corp.⁷
• Sep 29, 2023Exercised options 6,250 shares at $0.26 of Birchtech Corp.⁷
• Jul 28, 2023Shares withheld for tax 3,209 shares at $0.33 of Birchtech Corp.⁸
• Jul 28, 2023Exercised options 6,250 shares at $0.17 of Birchtech Corp.⁸
• Jun 28, 2023Shares withheld for tax 4,375 shares at $0.30 of Birchtech Corp.⁹
• Jun 28, 2023Exercised options 6,250 shares at $0.21 of Birchtech Corp.⁹
• Jun 7, 2023Shares withheld for tax 4,898 shares at $0.37 of Birchtech Corp.¹⁰
• Jun 7, 2023Exercised options 6,250 shares at $0.29 of Birchtech Corp.¹⁰
• Feb 1, 2023Shares withheld for tax 95,000 shares at $0.50 of Birchtech Corp.¹¹
• Feb 1, 2023Exercised options 250,000 shares at $0.19 of Birchtech Corp.¹¹
• May 31, 2022Granted 100,000 shares of Birchtech Corp.¹²