// company-profile
Birchtech Corp.
BCHTExchangeNYSESectorMeasuring & Controlling Devices, NECInc.DEFilings34Insiders8
// api This Birchtech Corp. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
No insider activity recorded for BCHT in the last 90 days.
Institutional Ownership
Top 13F-HR holders of Birchtech Corp. as of 2026-03-31
Total reported AUM
$5.3M
QoQ change
—
Reporting period
2026-03-31
#1
HEARTLAND ADVISORS INC
CIK 937394
$1.9M
1.0M shares
#2
CHAPIN DAVIS, INC.
CIK 872098
$1.3M
687K shares
#3
Aristides Capital LLC
CIK 1595521
$807,500
425K shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Feb 27, 2026 | MacPherson Richard | BCHT | Purchase | 312,500 | $2.40 | $750K |
| Dec 12, 2025 | MacPherson Richard | BCHT | Option Exercise | 500,000 | $0.58 | $290K |
| Dec 12, 2025 | MacPherson Richard | BCHT | Tax Withholding | 310,427 | $0.93 | $290K |
| Dec 12, 2025 | MacPherson Richard | BCHT | Option Exercise | 500,000 | $0.00 | $0K |
| Dec 12, 2025 | Kaye David M | BCHT | Option Exercise | 250,000 | $0.58 | $145K |
45 more transactions hidden
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