DMAC Insider Trading
DiaMedica Therapeutics Inc. | Pharmaceutical Preparations
Comprehensive Trading Performance Summary
The investment history of corporate insiders at DiaMedica Therapeutics Inc. provides a unique lens into the internal conviction of the company's leadership. By analyzing SEC Form 4 filings, investors can track how directors and officers are allocating their own capital. High-conviction buying often signals that management believes the current market price significantly undervalues future growth prospects, while strategic selling might occur for personal liquidity or portfolio diversification. Monitoring these shifts in ownership is essential for understanding the alignment between management and shareholders in the Pharmaceutical Preparations sector.
Transactions on Chart
Open Full Chart| Filing Date | Trade Date | Reporting Person | Relationship | Type | Price | Qty | Total, $ | Owned After | Change, % |
|---|---|---|---|---|---|---|---|---|---|
| 2025-12-09 01:15 | 2025-11-17 | STAHLBERG JAN | 10% owner | BUY | $7.19 | 1,061,277 | $7,631,431 | 8,825,742 | +13.7% |
| 2025-09-04 21:29 | 2025-08-13 | STAHLBERG JAN | 10% owner | BUY | $5.96 | 1,000,000 | $5,958,100 | 7,764,465 | +14.8% |
| 2025-07-26 01:54 | 2025-07-23 | STAHLBERG JAN | 10% owner | BUY | $3.50 | 1,542,857 | $5,400,000 | 6,764,465 | +29.5% |
| 2025-07-26 00:49 | 2025-07-23 | Von Koch Thomas | 10% owner | BUY | $3.50 | 2,857,142 | $9,999,997 | 8,383,577 | +51.7% |
| 2025-07-25 23:35 | 2025-07-23 | JACINTO RICHARD II | 10% owner | BUY | $3.50 | 400,000 | $1,400,000 | 4,958,823 | +8.8% |
| 2024-07-01 23:27 | 2024-06-28 | Von Koch Thomas | 10% owner | BUY | $2.50 | 1,200,000 | $3,000,000 | 5,526,435 | +27.7% |
| 2024-07-01 23:24 | 2024-06-28 | STAHLBERG JAN | 10% owner | BUY | $2.50 | 1,200,000 | $3,000,000 | 5,221,608 | +29.8% |
| 2023-11-17 00:37 | 2023-11-16 | Wambeke David J. | Officer - Chief Business Officer | BUY | $2.46 | 20,000 | $49,200 | 527,114 | +3.9% |
| 2023-06-27 23:11 | 2023-06-23 | Von Koch Thomas | 10% owner | BUY | $3.40 | 1,470,588 | $4,999,999 | 4,326,435 | +51.5% |
| 2023-06-26 23:42 | 2023-06-23 | Giuffre Randall Michael | Director | BUY | $3.91 | 65,000 | $254,150 | 360,355 | +22.0% |
| 2023-06-26 23:34 | 2023-06-23 | Pauls Dietrich John | Director, Officer - President and CEO | BUY | $3.91 | 12,787 | $49,997 | 68,591 | +22.9% |
| 2023-06-26 23:26 | 2023-06-23 | Semba Charles Pauling | Director | BUY | $3.91 | 12,787 | $49,997 | 29,943 | +74.5% |
| 2023-06-26 23:21 | 2023-06-23 | Kellen Scott | Officer - CFO and Secretary | BUY | $3.91 | 10,000 | $39,100 | 32,290 | +44.9% |
| 2023-06-26 23:14 | 2023-06-23 | Wambeke David J. | Officer - Chief Business Officer | BUY | $3.91 | 38,364 | $150,003 | 507,114 | +8.2% |
| 2023-06-26 23:03 | 2023-06-23 | Pilnik Richard D. | Director | BUY | $3.91 | 38,363 | $149,999 | 248,245 | +18.3% |
| 2023-04-12 00:40 | 2023-04-10 | Wambeke David J. | Officer - Chief Business Officer | BUY | $1.60 | 468,750 | $750,000 | 468,750 | +100.0% |
| 2022-12-13 00:34 | 2022-12-08 | Giuffre Randall Michael | Director | BUY | $1.42 | 57,079 | $81,024 | 260,225 | +28.1% |
| 2022-12-09 00:55 | 2022-12-06 | Giuffre Randall Michael | Director | BUY | $1.40 | 24,874 | $34,709 | 203,146 | +14.0% |
| 2022-12-06 23:19 | 2022-12-02 | Von Koch Thomas | 10% owner | SELL | $1.24 | 2,855,847 | $3,526,971 | 0 | -100.0% |
| 2022-12-06 23:19 | 2022-12-02 | Von Koch Thomas | 10% owner | BUY | $1.24 | 2,855,847 | $3,526,971 | 2,855,847 | +100.0% |
| 2022-12-06 00:16 | 2022-12-05 | Pilnik Richard D. | Director | BUY | $1.39 | 35,000 | $48,493 | 154,327 | +29.3% |
| 2022-12-06 00:08 | 2022-12-01 | Giuffre Randall Michael | Director | BUY | $1.19 | 819 | $975 | 178,272 | +0.5% |
| 2022-12-02 01:11 | 2022-11-29 | Giuffre Randall Michael | Director | BUY | $1.20 | 67,228 | $80,465 | 177,453 | +61.0% |
| 2022-07-21 20:06 | 2022-07-08 | Von Koch Thomas | 10% owner | BUY | $1.33 | 207,974 | $275,898 | 2,855,827 | +7.9% |
| 2021-09-15 23:37 | 2021-09-15 | ALCORN HARRY W JR | Officer - SVP, Clinical Operations | BUY | $3.80 | 15,000 | $56,960 | 43,582 | +52.5% |
| 2021-08-17 23:11 | 2021-08-16 | Burroughs Amy L. | Director | BUY | $3.15 | 44,950 | $141,593 | 44,950 | +100.0% |
| 2021-08-17 23:05 | 2021-08-16 | Pilnik Richard D. | Director | BUY | $3.27 | 15,000 | $49,064 | 95,565 | +18.6% |
| 2021-08-16 23:27 | 2021-08-16 | ALCORN HARRY W JR | Officer - Senior VP, Clinical Operations | BUY | $3.09 | 20,721 | $64,055 | 399 | +100.0% |
| 2021-08-16 23:19 | 2021-08-16 | Pauls Dietrich John | Director, Officer - President and CEO | BUY | $3.14 | 5,000 | $15,700 | 35,804 | +16.2% |
| 2021-08-16 23:10 | 2021-08-16 | Kellen Scott | Officer - CFO and Secretary | BUY | $3.15 | 10,000 | $31,463 | 22,290 | +81.4% |
| 2020-12-05 01:46 | 2020-12-04 | Pilnik Richard D. | Director | BUY | $5.37 | 10,000 | $53,697 | 70,846 | +16.4% |
| 2020-11-24 00:22 | 2020-11-20 | Giuffre Randall Michael | Director | BUY | $4.26 | 15,000 | $63,912 | 108,588 | +16.0% |
| 2020-11-10 16:16 | 2020-11-09 | Kellen Scott | Officer - CFO and Secretary | BUY | $4.19 | 2,000 | $8,387 | 12,290 | +19.4% |
| 2019-08-19 23:24 | 2019-08-19 | Kellen Scott | Officer - CFO and Secretary | BUY | $2.43 | 3,000 | $7,290 | 10,290 | +41.2% |
| 2019-08-19 13:45 | 2019-08-16 | Pilnik Richard D. | Director | BUY | $2.56 | 7,840 | $20,039 | 50,678 | +18.3% |
| 2019-08-16 23:35 | 2019-08-16 | ALCORN HARRY W JR | Officer - Chief Medical Officer | BUY | $2.67 | 7,260 | $19,365 | 8,260 | +726.0% |
| 2019-08-16 23:31 | 2019-08-16 | Pauls Dietrich John | Director, Officer - President and CEO | BUY | $2.68 | 1,000 | $2,677 | 30,804 | +3.4% |
| 2019-05-31 23:11 | 2019-05-31 | Pilnik Richard D. | Director | BUY | $2.80 | 19,000 | $53,200 | 42,838 | +79.7% |
| 2019-05-28 14:17 | 2019-05-24 | Kellen Scott | Officer - CFO and Secretary | BUY | $2.94 | 4,000 | $11,770 | 7,290 | +121.6% |
| 2019-03-29 23:15 | 2019-03-27 | ALCORN HARRY W JR | Officer - Chief Medical Officer | BUY | $4.46 | 150 | $668 | 1,150 | +15.0% |
| 2018-12-12 00:48 | 2018-12-11 | Xiao Zhenyu | Director, 10% owner | BUY | $4.00 | 3,250 | $13,000 | 7,100 | +84.4% |
| 2018-12-12 00:42 | 2018-12-11 | Verdoorn Todd A. | Officer - Chief Scientific Officer | BUY | $4.00 | 1,000 | $4,000 | 2,000 | +100.0% |
| 2018-12-12 00:37 | 2018-12-11 | Pilnik Richard D. | Director | BUY | $4.00 | 6,250 | $25,000 | 23,838 | +35.5% |
| 2018-12-12 00:31 | 2018-12-11 | Pauls Dietrich John | Director, Officer - President and CEO | BUY | $4.00 | 5,000 | $20,000 | 29,804 | +20.2% |
| 2018-12-12 00:27 | 2018-12-11 | Parsons James T. | Director | BUY | $4.00 | 2,250 | $9,000 | 6,100 | +58.4% |
| 2018-12-12 00:22 | 2018-12-11 | Kellen Scott | Officer - CFO and Secretary | BUY | $4.00 | 1,250 | $5,000 | 3,290 | +61.3% |
| 2018-12-12 00:17 | 2018-12-11 | Giuffre Randall Michael | Director | BUY | $4.00 | 11,250 | $45,000 | 85,804 | +15.1% |
| 2018-12-12 00:08 | 2018-12-11 | ALCORN HARRY W JR | Officer - Chief Medical Officer | BUY | $4.00 | 1,000 | $4,000 | 1,000 | +100.0% |
How to Interpret $DMAC Trades
Not every insider transaction in DiaMedica Therapeutics Inc. is a signal for immediate action. Professional investors look for "cluster buying"—when multiple executives simultaneously purchase $DMAC shares on the open market. It is crucial to distinguish between scheduled sales (under Rule 10b5-1) and voluntary increases in ownership, which demonstrate management’s true conviction that the stock is undervalued.
Data Source & Accuracy for DMAC
Insider activity data for DiaMedica Therapeutics Inc. is streamed in real-time directly from the SEC EDGAR system. We analyze raw Form 4 filings, filtering out technical adjustments and complex derivative transactions. This provides a transparent view of how ownership structure is evolving in $DMAC, allowing you to follow the capital of those with the most intimate knowledge of the company.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.