Comparable stake leader
Laurence W. Lytton
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
28/38
Latest evidence
29 Sep 2026
- Public ticker
- BCHT on NYSE
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Laurence W. Lytton
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
28 of 38
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Laurence W. Lytton
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
29 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000728385
- Issuer location
- Corsicana, TX
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
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
Laurence W. Lytton
Disclosed value leader
Richard MacPherson
Comparable rows
28/38
Latest evidence
29 Sep 2026
13D/G
13F
3/4/5
Lead comparable stake: 5.2%
10 rows are not safely comparable across share classes.
13D/G row: Laurence W. Lytton
Showing 1-8 of 38 holder rows.
Quick read
Laurence W. Lytton leads the comparable SEC ownership view at 5.2%.
28 of 38 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 Laurence W. Lytton's linked filing trail.
Comparable ownership
Top 5
Laurence W. Lytton
5.2%
HEARTLAND ADVISORS INC
3.8%
VANGUARD CAPITAL MANAGEMENT LLC
2.7%
Ancora Advisors LLC
2.6%
CHAPIN DAVIS, INC.
2.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 38 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Laurence W. Lytton |
13D/G
|
5.2%
|
$1,905,108
1,380,513 shares
|
$0 | 29 Sep 2026 |
| HEARTLAND ADVISORS INC |
13F
Company
|
3.8%
|
$2,050,000
1,000,000 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
2.7%
|
$1,478,423
721,182 shares
|
— | 30 Jun 2026 |
| Ancora Advisors LLC |
13F
Company
|
2.6%
|
$1,435,500
700,244 shares
|
— | 30 Jun 2026 |
| CHAPIN DAVIS, INC. |
13F
Company
|
2.6%
|
$1,407,721
686,693 shares
|
— | 30 Jun 2026 |
| Aristides Capital LLC |
13F
Company
|
1.6%
|
$871,250
425,000 shares
|
— | 30 Jun 2026 |
| WHITE PINE CAPITAL LLC |
13F
Company
|
1.2%
|
$676,816
330,154 shares
|
— | 30 Jun 2026 |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
Company
|
0.52%
|
$285,343
139,192 shares
|
— | 30 Jun 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 14 Oct 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 |
* marks a reported price that did not pass the local price check.