Comparable stake leader
Richard MacPherson
SEC ownership of Birchtech Corp.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000728385.
Disclosed value leader
Richard MacPherson
Comparable rows
0/33
Latest evidence
31 Mar 2026
- Public ticker
- BCHT on NYSE
- Parsed ownership sources
- 3/4/5 and 13F
- Largest SEC-reported holder
- Richard MacPherson
- Latest parsed ownership date
- 31 Mar 2026
- Issuer CIK
- 0000728385
- Issuer location
- Corsicana, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Birchtech Corp. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Richard MacPherson
Disclosed value leader
Richard MacPherson
Comparable rows
0/33
Latest evidence
31 Mar 2026
3/4/5
13F
Highest disclosed value: $12,343,541
33 rows are not safely comparable across share classes.
Showing 1-8 of 33 holder rows.
Quick read
Richard MacPherson has the largest disclosed position value at $12.34M.
0 of 33 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Richard MacPherson's linked filing trail.
Disclosed position value
Top 5
Richard MacPherson
$12.34M
Christopher Greenberg
$5.38M
John Pavlish
$2.01M
HEARTLAND ADVISORS INC
$1.9M
CHAPIN DAVIS, INC.
$1.3M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-8 of 33 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Richard MacPherson |
3/4/5
President and CEO, Director, 10%+ Owner
|
—
class O/S missing
|
$12,343,541
2,955,095 shares
|
— | 27 Feb 2026 |
| Alterna Core Capital Assets Fund II, L.P. |
3/4/5
10%+ Owner
|
—
class O/S missing
|
—
11,700,000 shares
|
— | 28 Oct 2022 |
| Christopher Greenberg |
3/4/5
Chairman of the Board, Director
|
—
mixed-class rows
|
$5,377,314
5,630,533 shares
mixed-class rows
|
— | 15 Jan 2024 |
| John Pavlish |
3/4/5
Senior VP/Chief Tech Officer
|
—
mixed-class rows
|
$2,007,475
2,398,528 shares
mixed-class rows
|
— | 11 Dec 2025 |
| HEARTLAND ADVISORS INC |
13F
Company
|
—
class O/S missing
|
$1,900,000
1,000,000 shares
|
— | 31 Mar 2026 |
| CHAPIN DAVIS, INC. |
13F
Company
|
—
class O/S missing
|
$1,304,716
686,693 shares
|
— | 31 Mar 2026 |
| Ancora Advisors LLC |
13F
Company
|
—
class O/S missing
|
$814,503
428,686 shares
|
— | 31 Mar 2026 |
| Aristides Capital LLC |
13F
Company
|
—
class O/S missing
|
$807,500
425,000 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 03 Jun 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-12 of 12 reporting-owner rows connected to Birchtech Corp.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
12
Largest Forms 3/4/5 holder
Richard MacPherson
Net 12M change
$0
Latest report
01 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Richard MacPherson | President and CEO, Director, 10%+ Owner | $12,343,541 | Mixed | 27 Feb 2026 | ||
| Christopher Greenberg | Chairman of the Board, Director | $5,377,314 | Mixed | 15 Jan 2024 | ||
| John Pavlish | Senior VP/Chief Tech Officer | $2,007,475 | Mixed | 11 Dec 2025 | ||
| David M. Kaye | Director | $345,786 | Mixed | 12 Dec 2025 | ||
| Troy J. Grant | Director | $198,040 | Mixed | 15 Jan 2024 | ||
| Mitzi H. Coogler | Director | $6,601 | Mixed | 09 Jan 2025 | ||
| Michael David Mioska | Chief Financial Officer | Mixed | 01 May 2026 | |||
| James Trettel | Vice President of Operations | Mixed | 15 Jan 2024 | |||
| Fiona Fitzmaurice | Chief Financial Officer | Mixed | 15 Jan 2024 | |||
| Jami L. Satterthwaite | Chief Financial Officer | Mixed | 31 May 2022 | |||
| Gregory R. Powell | Chief Financial Officer | Mixed | 01 Mar 2023 | |||
| Alterna Core Capital Assets Fund II, L.P. | 10%+ Owner | Mixed | 28 Oct 2022 |
Recent insider transactions for Birchtech Corp.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Richard MacPherson | BCHT | Common Stock | Purchase | 11.8% | 312,500 | 2,955,095 | 27 Feb 2026 | Direct | ||
| David M. Kaye | BCHT | Common Stock | Tax liability | -29.5% | -155,214 | 370,142 | 12 Dec 2025 | Direct | ||
| David M. Kaye | BCHT | Common Stock | Options Exercise | 90.8% | 250,000 | 525,356 | 12 Dec 2025 | Direct | ||
| David M. Kaye | BCHT | Stock Option (Right to Buy) | Options Exercise | -100% | -250,000 | 0 | 12 Dec 2025 | Direct | ||
| Richard MacPherson | BCHT | Common Stock | Tax liability | -2.3% | -310,427 | 13,212,954 | 12 Dec 2025 | Direct | ||
| Richard MacPherson | BCHT | Common Stock | Options Exercise | 3.84% | 500,000 | 13,523,381 | 12 Dec 2025 | Direct | ||
| Richard MacPherson | BCHT | Stock Option (Right to Buy) | Options Exercise | -100% | -500,000 | 0 | 12 Dec 2025 | Direct | ||
| John Pavlish | BCHT | Common Stock | Tax liability | -7.98% | -190,560 | 2,198,528 | 11 Dec 2025 | Direct | ||
| John Pavlish | BCHT | Common Stock | Options Exercise | 14.4% | 300,000 | 2,389,088 | 11 Dec 2025 | Direct | ||
| John Pavlish | BCHT | Stock Option (Right to Buy) | Options Exercise | -60% | -300,000 | 200,000 | 11 Dec 2025 | Direct | ||
| John Pavlish | BCHT | Common Stock | Tax liability | -7.97% | -181,022 | 2,089,088 | 20 Jun 2025 | Direct | ||
| John Pavlish | BCHT | Common Stock | Options Exercise | 28.2% | 500,000 | 2,270,110 | 20 Jun 2025 | Direct | ||
| John Pavlish | BCHT | Stock Option (Right to Buy) | Options Exercise | -100% | -500,000 | 0 | 20 Jun 2025 | Direct | ||
| Richard MacPherson | BCHT | Common Stock | Tax liability | -1.37% | -181,022 | 13,023,381 | 20 Jun 2025 | Direct | ||
| Richard MacPherson | BCHT | Common Stock | Options Exercise | 3.94% | 500,000 | 13,204,403 | 20 Jun 2025 | Direct | ||
| Richard MacPherson | BCHT | Stock Option (Right to Buy) | Options Exercise | -100% | -500,000 | 0 | 20 Jun 2025 | Direct |
* marks a reported price that did not pass the local price check.