United States Biotechnology & Medical Research

DiaMedica Therapeutics Inc (DMAC)

Track

Insider trading activity at DiaMedica Therapeutics Inc. has been characterized by significant buying. The most recent transactions occurred between November 17 and November 25, 2025, when Jan Stahlberg, a 10% security holder, executed multiple purchase orders. These acquisitions represent a notable accumulation of shares by the insider during this period.
Ticker: DMAC Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Trades
Buy 25 Nov 2025
Value US$255,347.35 | Price 185.45 | Shares 27,798 (+32.6%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2025-12-08 2025-11-25 B Purchase
3.5
STAHLBERG JAN
Large shareholder
27,798 +32.6%
185.45
US$255,347 		27,798 +32.6% 185.45 US$255,347
2025-11-26 2025-11-25 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
35,834 +30.4%
155.62
US$3,411,723 		35,834 +30.4% 155.62 US$3,411,723
2025-12-08 2025-11-24 B Purchase
3.5
STAHLBERG JAN
Large shareholder
19,781 +33.8%
226.80
US$2,047,695 		19,781 +33.8% 226.80 US$2,047,695
2025-11-26 2025-11-24 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
40,253 +0.5%
7.89
US$317,721 		40,253 +0.5% 7.89 US$317,721
2025-12-08 2025-11-21 B Purchase
3.5
STAHLBERG JAN
Large shareholder
208,872 +2.5%
7.41
US$1,547,574 		208,872 +2.5% 7.41 US$1,547,574
2025-11-24 2025-11-21 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
208,872 +2.6%
7.41
US$1,547,574 		208,872 +2.6% 7.41 US$1,547,574
2025-12-08 2025-11-20 B Purchase
3.5
STAHLBERG JAN
Large shareholder
128,426 +1.5%
7.41
US$951,213 		128,426 +1.5% 7.41 US$951,213
2025-11-21 2025-11-20 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
128,426 +1.6%
7.41
US$951,213 		128,426 +1.6% 7.41 US$951,213
2025-12-08 2025-11-19 B Purchase
3.5
STAHLBERG JAN
Large shareholder
240,352 +3.0%
7.21
US$1,732,361 		240,352 +3.0% 7.21 US$1,732,361
2025-11-20 2025-11-19 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
240,352 +3.1%
7.21
US$1,732,361 		240,352 +3.1% 7.21 US$1,732,361
2025-12-08 2025-11-18 B Purchase
3.5
STAHLBERG JAN
Large shareholder
182,882 +2.3%
6.75
US$1,234,618 		182,882 +2.3% 6.75 US$1,234,618
2025-11-18 2025-11-18 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
182,882 +2.4%
6.75
US$1,234,618 		182,882 +2.4% 6.75 US$1,234,618
2025-12-08 2025-11-17 B Purchase
3.5
STAHLBERG JAN
Large shareholder
187,393 +2.4%
6.52
US$1,221,165 		187,393 +2.4% 6.52 US$1,221,165
2025-11-18 2025-11-17 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
187,393 +2.6%
6.52
US$1,221,165 		187,393 +2.6% 6.52 US$1,221,165
2025-09-04 2025-08-27 B Purchase
3.5
STAHLBERG JAN
Large shareholder
50,772 +0.7%
6.00
US$304,632 		50,772 +0.7% 6.00 US$304,632
2025-08-28 2025-08-27 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
50,772 +0.7%
8.29
CA$420,900 		50,772 +0.7% 8.29 CA$420,900
2025-09-04 2025-08-26 B Purchase
3.5
STAHLBERG JAN
Large shareholder
59,648 +0.8%
6.00
US$357,888 		59,648 +0.8% 6.00 US$357,888
2025-08-28 2025-08-26 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
59,648 +0.8%
8.30
CA$495,078 		59,648 +0.8% 8.30 CA$495,078
2025-09-04 2025-08-25 B Purchase
3.5
STAHLBERG JAN
Large shareholder
338,265 +4.6%
6.00
US$2,029,252 		338,265 +4.6% 6.00 US$2,029,252
2025-09-04 2025-08-22 B Purchase
3.5
STAHLBERG JAN
Large shareholder
59,788 +0.8%
5.96
US$356,576 		59,788 +0.8% 5.96 US$356,576
2025-08-25 2025-08-22 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
59,788 +0.8%
8.26
CA$493,849 		59,788 +0.8% 8.26 CA$493,849
2025-08-25 2025-08-22 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
48,172 +0.7%
8.28
CA$398,864 		48,172 +0.7% 8.28 CA$398,864
2025-09-04 2025-08-21 B Purchase
3.5
STAHLBERG JAN
Large shareholder
48,172 +0.7%
5.96
US$287,028 		48,172 +0.7% 5.96 US$287,028
2025-09-04 2025-08-20 B Purchase
3.5
STAHLBERG JAN
Large shareholder
71,107 +1.0%
5.86
US$416,495 		71,107 +1.0% 5.86 US$416,495
2025-08-25 2025-08-20 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
71,107 +1.0%
8.13
CA$578,100 		71,107 +1.0% 8.13 CA$578,100
2025-09-04 2025-08-15 B Purchase
3.5
STAHLBERG JAN
Large shareholder
8,233 +0.1%
6.00
US$49,398 		8,233 +0.1% 6.00 US$49,398
2025-08-18 2025-08-15 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
8,233 +0.1%
8.28
CA$68,169 		8,233 +0.1% 8.28 CA$68,169
2025-09-04 2025-08-14 B Purchase
3.5
STAHLBERG JAN
Large shareholder
70,414 +1.0%
5.99
US$421,921 		70,414 +1.0% 5.99 US$421,921
2025-08-18 2025-08-14 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
70,414 +1.0%
8.27
CA$582,324 		70,414 +1.0% 8.27 CA$582,324
2025-09-04 2025-08-13 B Purchase
3.5
STAHLBERG JAN
Large shareholder
293,601 +4.3%
5.91
US$1,734,918 		293,601 +4.3% 5.91 US$1,734,918
2025-08-18 2025-08-13 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
293,601 +4.4%
8.14
CA$2,389,912 		293,601 +4.4% 8.14 CA$2,389,912
2025-07-25 2025-07-23 B Purchase
3.5
STAHLBERG JAN
Large shareholder
1,542,857 +29.5%
3.50
US$5,400,000 		1,542,857 +29.5% 3.50 US$5,400,000
2025-07-25 2025-07-23 B Purchase
1.6
Von Koch Thomas
Large shareholder
2,857,142 +51.7%
3.50
US$9,999,997 		2,857,142 +51.7% 3.50 US$9,999,997
2025-07-25 2025-07-23 B Purchase
JACINTO RICHARD II
Large shareholder
400,000 +8.8%
3.50
US$1,400,000 		400,000 +8.8% 3.50 US$1,400,000
2025-07-24 2025-07-23 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
1,428,571 +27.4%
3.50
US$4,999,998 		1,428,571 +27.4% 3.50 US$4,999,998
2025-07-24 2025-07-23 B Purchase
Jacinto II, Richard

10% Security Holder of Issuer

Large shareholder
400,000 +8.8%
3.50
US$1,400,000 		400,000 +8.8% 3.50 US$1,400,000
2025-07-24 2025-07-23 B Purchase
Colleen, Per

Director or Senior Officer of 10% Security Holder
2,857,142 +66.0%
3.50
US$9,999,997 		2,857,142 +66.0% 3.50 US$9,999,997
2024-07-02 2024-07-01 PrS Proposed sale
Daves Julie VanOrsdel

Officer

Officer
39,700
2.76
US$109,463 		39,700 2.76 US$109,463
2024-07-01 2024-06-28 B Purchase
1.6
Von Koch Thomas
Large shareholder
1,200,000 +27.7%
2.50
US$3,000,000 		1,200,000 +27.7% 2.50 US$3,000,000
2024-07-01 2024-06-28 B Purchase
3.5
STAHLBERG JAN
Large shareholder
1,200,000 +29.8%
2.50
US$3,000,000 		1,200,000 +29.8% 2.50 US$3,000,000
2023-11-16 2023-11-16 B Purchase
3.6
Wambeke David J.

Chief Business Officer

Officer
20,000 +3.9%
2.46
US$49,200 		20,000 +3.9% 2.46 US$49,200
2023-06-28 2023-06-23 B Purchase
von Koch, Nina

Director or Senior Officer of 10% Security Holder
1,470,588 +51.5%
3.40
US$4,999,999 		1,470,588 +51.5% 3.40 US$4,999,999
2023-06-28 2023-06-23 B Purchase
Von Koch, Nils Thomas

10% Security Holder of Issuer

Large shareholder
1,470,588 +51.5%
3.40
US$4,999,999 		1,470,588 +51.5% 3.40 US$4,999,999
2023-06-28 2023-06-23 B Purchase
Trill AB

10% Security Holder of Issuer

Large shareholder
1,470,588 +57.6%
3.40
US$4,999,999 		1,470,588 +57.6% 3.40 US$4,999,999
2023-06-28 2023-06-23 B Purchase
TomEqt Private AB

10% Security Holder of Issuer

Large shareholder
1,470,588 +51.5%
3.40
US$4,999,999 		1,470,588 +51.5% 3.40 US$4,999,999
2023-06-28 2023-06-23 B Purchase
3.5
Staahlberg, Jan

Director or Senior Officer of 10% Security Holder
1,470,588 +57.6%
3.40
US$4,999,999 		1,470,588 +57.6% 3.40 US$4,999,999
2023-06-28 2023-06-23 B Purchase
Gustafsson, Jennie

Director or Senior Officer of 10% Security Holder
1,470,588 +57.6%
3.40
US$4,999,999 		1,470,588 +57.6% 3.40 US$4,999,999
2023-06-28 2023-06-23 B Purchase
Colleen, Per

Director or Senior Officer of 10% Security Holder
1,470,588 +51.5%
3.40
US$4,999,999 		1,470,588 +51.5% 3.40 US$4,999,999
2023-06-27 2023-06-23 B Purchase
1.6
Von Koch Thomas
Large shareholder
1,470,588 +51.5%
3.40
US$4,999,999 		1,470,588 +51.5% 3.40 US$4,999,999
2023-06-26 2023-06-23 B Purchase
0.6
Wambeke, David

Senior Officer of Issuer

Officer
38,364 +8.2%
3.91
US$150,003 		38,364 +8.2% 3.91 US$150,003
2023-06-26 2023-06-23 B Purchase
0.6
Semba, Charles

Director of Issuer

Non-Executive Director
12,787
3.91
US$49,997 		12,787 3.91 US$49,997
2023-06-26 2023-06-23 B Purchase
0.6
Pilnik, Richard D.

Director of Issuer

Non-Executive Director
38,363 +56.3%
3.91
US$149,999 		38,363 +56.3% 3.91 US$149,999
2023-06-26 2023-06-23 B Purchase
1.9
Pauls, Dietrich (Rick) John

Director of Issuer, Senior Officer of Issuer

Executive Director
12,787 +37.5%
3.91
US$49,997 		12,787 +37.5% 3.91 US$49,997
2023-06-26 2023-06-23 B Purchase
0.6
Kellen, Scott

Senior Officer of Issuer

Officer
10,000 +41.1%
3.91
US$39,100 		10,000 +41.1% 3.91 US$39,100
2023-06-26 2023-06-23 B Purchase
0.6
GIUFFRE, MICHAEL

Director of Issuer

Non-Executive Director
65,000 +136.1%
3.91
US$254,150 		65,000 +136.1% 3.91 US$254,150
2023-06-26 2023-06-23 B Purchase
1.9
Pauls Dietrich John

President and CEO

Executive Director
12,787 +22.9%
3.91
US$49,997 		12,787 +22.9% 3.91 US$49,997
2023-06-26 2023-06-23 B Purchase
3.2
Giuffre Randall Michael
Non-Executive Director
65,000 +22.0%
3.91
US$254,150 		65,000 +22.0% 3.91 US$254,150
2023-06-26 2023-06-23 B Purchase
3.0
Pilnik Richard D.
Non-Executive Director
38,363 +18.3%
3.91
US$149,999 		38,363 +18.3% 3.91 US$149,999
2023-06-26 2023-06-23 B Purchase
2.5
Kellen Scott

CFO and Secretary

Officer
10,000 +44.9%
3.91
US$39,100 		10,000 +44.9% 3.91 US$39,100
2023-06-26 2023-06-23 B Purchase
0.6
Semba Charles Pauling
Non-Executive Director
12,787 +74.5%
3.91
US$49,997 		12,787 +74.5% 3.91 US$49,997
2023-06-26 2023-06-23 B Purchase
3.6
Wambeke David J.

Chief Business Officer

Officer
38,364 +8.2%
3.91
US$150,003 		38,364 +8.2% 3.91 US$150,003
2023-04-11 2023-04-10 B Purchase
3.6
Wambeke David J.

Chief Business Officer

Officer
468,750 +inf%
1.60
US$750,000 		468,750 +inf% 1.60 US$750,000
2022-12-12 2022-12-09 B Purchase
3.2
Giuffre Randall Michael
Non-Executive Director
37,079 +16.6%
1.43
US$53,023 		37,079 +16.6% 1.43 US$53,023
2022-12-12 2022-12-08 B Purchase
3.2
Giuffre Randall Michael
Non-Executive Director
20,000 +9.8%
1.40
US$28,000 		20,000 +9.8% 1.40 US$28,000
2022-12-08 2022-12-07 B Purchase
3.2
Giuffre Randall Michael
Non-Executive Director
22,574 +12.5%
1.40
US$31,604 		22,574 +12.5% 1.40 US$31,604
2022-12-08 2022-12-06 B Purchase
3.2
Giuffre Randall Michael
Non-Executive Director
2,300 +1.3%
1.35
US$3,105 		2,300 +1.3% 1.35 US$3,105
2022-12-05 2022-12-05 B Purchase
3.0
Pilnik Richard D.
Non-Executive Director
35,000 +29.3%
1.39
US$48,492 		35,000 +29.3% 1.39 US$48,492
2022-12-06 2022-12-02 B Purchase
1.6
Von Koch Thomas
Large shareholder
2,855,847 +inf%
1.24
US$3,526,971 		2,855,847 +inf% 1.24 US$3,526,971
2022-12-06 2022-12-02 S Sale
1.6
Von Koch Thomas
Large shareholder
2,855,847 -100.0%
1.24
US$3,526,971 		2,855,847 -100.0% 1.24 US$3,526,971
2022-12-05 2022-12-01 B Purchase
3.2
Giuffre Randall Michael
Non-Executive Director
819 +0.5%
1.19
US$975 		819 +0.5% 1.19 US$975
2022-12-01 2022-12-01 B Purchase
3.2
Giuffre Randall Michael
Non-Executive Director
46,133 +35.1%
1.20
US$55,360 		46,133 +35.1% 1.20 US$55,360
2022-12-01 2022-11-30 B Purchase
3.2
Giuffre Randall Michael
Non-Executive Director
2,970 +2.3%
1.19
US$3,534 		2,970 +2.3% 1.19 US$3,534
2022-12-01 2022-11-29 B Purchase
3.2
Giuffre Randall Michael
Non-Executive Director
18,125 +16.4%
1.19
US$21,569 		18,125 +16.4% 1.19 US$21,569
2026-04-17 2022-11-16 B Purchase
1.9
Pauls, Dietrich (Rick) John

Director of Issuer, Senior Officer of Issuer

Executive Director
20,000 +58.7%
1.21
US$24,200 		20,000 +58.7% 1.21 US$24,200
2022-11-16 2022-11-16 B Purchase
1.9
Pauls Dietrich John

President and CEO

Executive Director
20,000 +55.9%
1.21
US$24,200 		20,000 +55.9% 1.21 US$24,200
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