SANUWAVE Health, Inc. (SNWV) has 20 known insider and institutional holders on record. The largest holder is Hofman Cornelius Adrianus II with 32,000,000 shares. Other notable holders include Prides Capital Partners, LLC and Nemelka David Nephi Jr..
Over the last 12 months, insiders have made 27 transactions in SNWV stock — 15 buys (valued at $5.19M) and 5 sells (valued at $1.15M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
SNWV Insider Ownership
Top Holder
Hofman Cornelius Adrianus II
32,000,000 shares
Buys (12 mo)
15
$5.19M value
Sells (12 mo)
5
$1.15M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Hofman Cornelius Adrianus Ii |
10 Percent Owner, Officer: Sole Officer & Director |
32,000,000 |
2009-03-27 |
|
| 2 |
Prides Capital Partners, Llc |
10 Percent Owner |
5,805,371 |
2015-10-15 |
|
| 3 |
Nemelka David Nephi Jr. |
10 Percent Owner |
4,839,259 |
2012-11-29 |
|
| 4 |
Parikh Shri P. |
President |
1,000,000 |
2019-11-04 |
|
| 5 |
Opaleye Management Inc. |
10 Percent Owner |
966,267 |
2025-10-09 |
|
| 6 |
Cashman Christopher M |
10 Percent Owner |
212,030 |
2013-08-15 |
|
| 7 |
Walko Andrew |
President |
106,667 |
2024-10-23 |
|
| 8 |
Stolarski Anthony Michael |
Director |
89,664 |
2025-06-12 |
|
| 9 |
Manchester Management Co Llc |
Other: Director By Deputization |
70,499 |
2025-12-15 |
|
| 10 |
Chiarelli Joseph |
Chief Executive Officer |
60,000 |
2014-03-19 |
|
| 11 |
Hendricks Timothy |
Executive VP of Sales |
50,667 |
2024-10-23 |
|
| 12 |
Jenkins Barry J. |
Chief Financial Officer |
50,000 |
2014-05-09 |
|
| 13 |
Rubino Alan L |
Director |
50,000 |
2019-08-28 |
|
| 14 |
Sundstrom Lisa E |
CFO |
50,000 |
2019-08-28 |
|
| 15 |
Nemelka John Fritzen |
Director |
50,000 |
2019-08-28 |
|
| 16 |
Richardson Kevin A Ii |
Chief Executive Officer |
50,000 |
2019-08-28 |
|
| 17 |
Henagan Barbara M |
Director |
25,000 |
2011-09-29 |
|
| 18 |
Sparks Ronald M. Jr. |
Director |
25,000 |
2011-09-22 |
|
| 19 |
Nightwatch Capital Management, Llc |
Director |
16,702 |
2011-04-06 |
|
| 20 |
Cioanta Iulian |
Chief Sci. and Tech. Officer |
2,000 |
2025-01-10 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2025-12-12 |
Manchester Management Co Llc |
Other: Director By Deputization |
Informative Sell |
6,500 |
$21.04 |
$136.79K |
| 2025-12-11 |
Manchester Management Co Llc |
Other: Director By Deputization |
Informative Sell |
13,500 |
$31.28 |
$422.28K |
| 2025-12-10 |
Manchester Management Co Llc |
Other: Director By Deputization |
Informative Sell |
8,625 |
$30.39 |
$262.13K |
| 2025-12-09 |
Manchester Management Co Llc |
Other: Director By Deputization |
Informative Sell |
8,785 |
$30.58 |
$268.68K |
| 2025-12-08 |
Manchester Management Co Llc |
Other: Director By Deputization |
Informative Sell |
2,000 |
$31.60 |
$63.2K |
| 2025-10-06 |
Opaleye Management Inc. |
10 Percent Owner |
Informative Buy |
1,267 |
$30.28 |
$38.36K |
| 2025-06-30 |
Bazar Gregory Matthew |
Director |
RSU Award |
1,574 |
$32.86 |
$51.72K |
| 2025-06-30 |
Blizard Jeffrey |
Director |
RSU Award |
1,574 |
$32.86 |
$51.72K |
| 2025-06-30 |
Tyler James |
Director |
RSU Award |
1,574 |
$32.86 |
$51.72K |
| 2025-06-30 |
Miller Ian D. |
Director |
RSU Award |
1,771 |
$32.86 |
$58.2K |
| 2025-06-30 |
Frank Morgan C. |
10 Percent Owner, Officer: Chief Executive Officer |
RSU Award |
1,574 |
$32.86 |
$51.72K |
| 2025-04-03 |
Stolarski Anthony Michael |
Director |
RSU Award |
1,761 |
$29.80 |
$52.48K |
| 2024-12-31 |
Stolarski Anthony Michael |
Director |
RSU Award |
1,559 |
$22.76 |
$35.48K |
| 2024-10-22 |
Stolarski Anthony Michael |
Director |
RSU Award |
41,333 |
$14.20 |
$586.93K |
| 2024-10-18 |
Stolarski Anthony Michael |
Director |
Return of Shares |
- |
$15.00 |
- |
| 2024-01-21 |
Stolarski Anthony Michael |
Director |
Return of Shares |
- |
- |
- |
| 2023-11-14 |
Stolarski Anthony Michael |
Director |
Conversion (Sell) |
- |
$15.00 |
- |
| 2023-08-05 |
Stolarski Anthony Michael |
Director |
Conversion (Buy) |
103,114 |
$15.00 |
$1.55M |
| 2023-07-21 |
Stolarski Anthony Michael |
Director |
RSU Award |
- |
- |
- |
| 2022-11-14 |
Stolarski Anthony Michael |
Director |
RSU Award |
6,000 |
$15.00 |
$90K |
| 2022-08-05 |
Stolarski Anthony Michael |
Director |
RSU Award |
89,664 |
$15.00 |
$1.34M |
| 2019-05-31 |
Stolarski Anthony Michael |
Director |
Return of Shares |
533 |
$41.25 |
$21.99K |
| 2025-06-05 |
Stegagno Peter |
Chief Operating Officer |
Option Exercise (Sell) |
1,333 |
$15.00 |
$20K |
| 2025-05-27 |
Bazar Gregory Matthew |
Director |
RSU Award |
41,333 |
$27.97 |
$1.16M |
| 2025-05-27 |
Bazar Gregory Matthew |
Director |
Unknown |
- |
- |
- |
