DiaMedica Therapeutics Inc. (DMAC) has 20 known insider and institutional holders on record. The largest holder is Von Koch Thomas with 8,383,577 shares. Other notable holders include STAHLBERG JAN and JACINTO RICHARD II.
Over the last 12 months, insiders have made 33 transactions in DMAC stock — 31 buys (valued at $37.73M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
DMAC Insider Ownership
Top Holder
Von Koch Thomas
8,383,577 shares
Buys (12 mo)
31
$37.73M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Von Koch Thomas |
10 Percent Owner |
8,383,577 |
2025-07-25 |
|
| 2 |
Stahlberg Jan |
10 Percent Owner |
7,951,858 |
2025-12-08 |
|
| 3 |
Jacinto Richard Ii |
10 Percent Owner |
4,958,823 |
2025-07-25 |
|
| 4 |
Tomenterprise Ab |
Director |
2,855,827 |
2022-07-21 |
|
| 5 |
Pauls Dietrich John |
President & CEO |
600,000 |
2025-06-03 |
|
| 6 |
Krop Julie |
Chief Marketing Officer |
450,000 |
2025-11-03 |
|
| 7 |
Giuffre Randall Michael |
Director |
398,587 |
2026-01-06 |
|
| 8 |
Pilnik Richard D. |
Director |
288,995 |
2025-01-03 |
|
| 9 |
Lorianne Masuoka K. |
Chief Medical Officer |
285,000 |
2024-01-23 |
|
| 10 |
Wambeke David J. |
Chief Business Officer |
250,000 |
2025-06-03 |
|
| 11 |
Kellen Scott |
CFO & Secretary |
225,000 |
2025-06-03 |
|
| 12 |
Parsons James T. |
Director |
97,949 |
2026-01-06 |
|
| 13 |
Burroughs Amy L. |
Director |
73,288 |
2023-01-03 |
|
| 14 |
Verdoorn Todd A. |
Chief Scientific Officer |
71,025 |
2019-06-26 |
|
| 15 |
Gruis Kirsten L |
Chief Medical Officer |
67,000 |
2023-06-02 |
|
| 16 |
O'connor Daniel J. |
Director |
64,242 |
2025-02-24 |
|
| 17 |
Daves Julie Vanorsdel |
SVP Clinical Development Oper. |
54,000 |
2023-06-02 |
|
| 18 |
Semba Charles Pauling |
Director |
47,963 |
2026-01-06 |
|
| 19 |
Alcorn Harry W Jr |
SVP, Clinical Operations |
43,582 |
2021-09-15 |
|
| 20 |
Kuntz Richard |
Director |
32,162 |
2025-06-03 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-01-02 |
Semba Charles Pauling |
Director |
RSU Award |
3,355 |
$8.42 |
$28.25K |
| 2026-01-02 |
Parsons James T. |
Director |
RSU Award |
10,095 |
$8.42 |
$85K |
| 2026-01-02 |
Giuffre Randall Michael |
Director |
RSU Award |
6,175 |
$8.42 |
$51.99K |
| 2025-11-25 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
73,099 |
$8.57 |
$626.82K |
| 2025-11-24 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
40,253 |
$7.89 |
$317.72K |
| 2025-11-21 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
208,872 |
$7.41 |
$1.55M |
| 2025-11-20 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
128,426 |
$7.41 |
$951.21K |
| 2025-11-19 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
240,352 |
$7.21 |
$1.73M |
| 2025-11-18 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
182,882 |
$6.75 |
$1.23M |
| 2025-11-17 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
187,393 |
$6.52 |
$1.22M |
| 2025-11-21 |
Parsons James T. |
Director |
Option Exercise (Sell) |
12,000 |
$2.20 |
$26.4K |
| 2025-08-11 |
Krop Julie |
Chief Marketing Officer |
RSU Award |
450,000 |
$4.58 |
$2.06M |
| 2025-08-11 |
Krop Julie |
Officer |
Unknown |
- |
- |
- |
| 2025-08-27 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
50,772 |
$6.00 |
$304.63K |
| 2025-08-26 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
59,648 |
$6.00 |
$357.89K |
| 2025-08-25 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
338,265 |
$6.00 |
$2.03M |
| 2025-08-22 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
59,788 |
$5.96 |
$356.58K |
| 2025-08-21 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
48,172 |
$5.96 |
$287.03K |
| 2025-08-20 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
71,107 |
$5.86 |
$416.5K |
| 2025-08-15 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
8,233 |
$6.00 |
$49.4K |
| 2025-08-14 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
70,414 |
$5.99 |
$421.92K |
| 2025-08-13 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
293,601 |
$5.91 |
$1.73M |
| 2025-07-23 |
Stahlberg Jan |
10 Percent Owner |
Informative Buy |
1,542,857 |
$3.50 |
$5.4M |
| 2025-07-23 |
Von Koch Thomas |
10 Percent Owner |
Informative Buy |
2,857,142 |
$3.50 |
$10M |
| 2025-07-23 |
Jacinto Richard Ii |
10 Percent Owner |
Informative Buy |
400,000 |
$3.50 |
$1.4M |
