Impact Biomedical IBO Insider Ownership

NYSE IBO
$0.46 -0.03 (-7.15%)
As of: Sep 10, 2026 · 3:57 PM EDT

Insider Holdings by Owner

2.42Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
16.13%
0% pp QoQ
Shares Held by Insiders
1.97Mn
filed for Sep 2026
0.00% QoQ
Shares Outstanding
12.19Mn
12,185,412 shares
Direct Holdings
0
Indirect: 1.97Mn
Net Shares Traded (QoQ)
0
no net change in Sep 2026
Insiders Holding Shares
5
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest
Average ownership
Peak ownership

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter
Net over range
Buying quarters

Insider Ownership Summary

Quarter ending 30 Sep, 2026

IBO's three largest insider shareholders as of September 09, 2026 are Inc. Dss, (TenPercentOwner, 1.18Mn shares), Heng Fai Ambrose Chan (Director, 734.06K shares), Jason Grady (Director, 250.18K shares).

Form 4 Holdings

Insiders Holding IBO

Insiders 5
Shares held 2.42Mn
Of outstanding 19.82%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Inc. Dss, TenPercentOwner 0 1,178,882 1,178,882 48.8% 28 Mar, 2025
2 Heng Fai Ambrose Chan Director, TenPercentOwner 0 734,058 734,058 30.4% 02 Apr, 2025
3 Jason Grady Director 250,182 0 250,182 10.4% 25 Mar, 2026
4 Todd D Macko Chief Financial Officer 155,122 0 155,122 6.4% 30 Mar, 2026
5 Frank D Heuszel Chief Executive Officer 97,344 0 97,344 4.0% 09 Dec, 2024

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

27 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
25 Mar, 2026 Todd D Macko Chief Financial Officer Disposed S 1,600 $0.60 $961 198,122 Direct
25 Mar, 2026 Todd D Macko Chief Financial Officer Disposed S 1,600 $0.60 $961 198,122 Direct
25 Mar, 2026 Todd D Macko Chief Financial Officer Disposed S 1,600 $0.60 $961 198,122 Direct
27 Mar, 2026 Todd D Macko Chief Financial Officer Disposed S 43,400 $0.56 $24.37K 155,122 Direct
27 Mar, 2026 Todd D Macko Chief Financial Officer Disposed S 43,400 $0.56 $24.37K 155,122 Direct
27 Mar, 2026 Todd D Macko Chief Financial Officer Disposed S 43,400 $0.56 $24.37K 155,122 Direct
23 Mar, 2026 Jason Grady Director Disposed S 50,000 $0.65 $32.51K 250,182 Direct
22 May, 2025 Inc. Dss, TenPercentOwner Disposed S 115,600 $0.55 $63.48K 45,400 Direct
27 May, 2025 Inc. Dss, TenPercentOwner Disposed S 45,400 $0.54 $24.53K 0 Direct
03 Apr, 2025 Heng Fai Ambrose Chan Director Disposed S 351,555 $0.50 $174.02K 0 Indirect
04 Apr, 2025 Inc. Dss, TenPercentOwner Disposed S 890,800 $0.95 $845.01K 161,100 Direct
21 Mar, 2025 Inc. Dss, TenPercentOwner Disposed S 166,600 $3.30 $549.85K 0 Indirect
21 Mar, 2025 Inc. Dss, TenPercentOwner Disposed S 166,600 $3.30 $549.85K 0 Indirect
21 Mar, 2025 Inc. Dss, TenPercentOwner Disposed S 166,600 $3.30 $549.85K 1,178,882 Indirect
26 Mar, 2025 Inc. Dss, TenPercentOwner Disposed S 48,281 $3.13 $151.08K 1,109,339 Direct
26 Mar, 2025 Inc. Dss, TenPercentOwner Disposed S 9,858 $3.15 $31.05K 1,099,481 Direct
27 Mar, 2025 Inc. Dss, TenPercentOwner Disposed S 47,681 $2.50 $119.25K 1,051,800 Direct
05 Dec, 2024 Frank D Heuszel Chief Executive Officer Acquired P 500 $2.26 $1.13K 97,344 Direct
27 Nov, 2024 Frank D Heuszel Chief Executive Officer Acquired P 500 $2.61 $1.31K 96,844 Direct
26 Nov, 2024 Frank D Heuszel Chief Executive Officer Acquired P 550 $2.63 $1.44K 95,844 Direct