Impact BioMedical Inc. (IBO) has 5 known insider and institutional holders on record. The largest holder is DSS, INC. with 590,424 shares. Other notable holders include Chan Heng Fai Ambrose and Grady Jason.
Over the last 12 months, insiders have made 7 transactions in IBO stock — 0 buys (valued at RSU Award) and 7 sells (valued at $233.85K). Insider selling has exceeded buying during this period.
IBO Insider Ownership
Top Holder
DSS, INC.
590,424 shares
Buys (12 mo)
0
$0.00 value
Sells (12 mo)
7
$233.85K value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Dss, Inc. |
10 Percent Owner |
590,424 |
2026-01-06 |
|
| 2 |
Chan Heng Fai Ambrose |
10 Percent Owner |
351,555 |
2025-04-04 |
|
| 3 |
Grady Jason |
Director |
250,182 |
2026-03-25 |
|
| 4 |
Macko Todd D |
Chief Financial Officer |
198,122 |
2026-03-30 |
|
| 5 |
Heuszel Frank D |
Chief Executive Officer |
97,344 |
2024-12-09 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-27 |
Macko Todd D |
Chief Financial Officer |
Informative Sell |
43,400 |
$0.56 |
$24.37K |
| 2026-03-25 |
Macko Todd D |
Chief Financial Officer |
Informative Sell |
1,600 |
$0.60 |
$961.28 |
| 2026-03-23 |
Grady Jason |
Director |
Informative Sell |
50,000 |
$0.65 |
$32.51K |
| 2025-05-27 |
Dss, Inc. |
10 Percent Owner |
Informative Sell |
45,400 |
$0.54 |
$24.53K |
| 2025-05-22 |
Dss, Inc. |
10 Percent Owner |
Informative Sell |
115,600 |
$0.55 |
$63.48K |
| 2025-05-27 |
Dss, Inc. |
10 Percent Owner |
Informative Sell |
45,400 |
$0.54 |
$24.53K |
| 2025-05-22 |
Dss, Inc. |
10 Percent Owner |
Informative Sell |
115,600 |
$0.55 |
$63.48K |
