As of September 29, 2026, the three largest insider holders of INBS are Science Biosensor Diagnostics Pty Ltd Life (Other, 54.09K shares), Harry Simeonidis (Chief Executive Officer, 34.54K shares), Spiro Kevin Sakiris (Chief Financial Officer, 33.98K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Science Biosensor Diagnostics Pty Ltd Life | Other | 54,090 | 0 | 54,090 | 34.6% | 22 Feb, 2022 |
| 2 | Spiro Kevin Sakiris | Chief Financial Officer | 40,242 | 0 | 40,242 | 25.8% | 19 Mar, 2026 |
| 3 | Harry Simeonidis | Chief Executive Officer | 34,557 | 0 | 34,557 | 22.1% | 19 Mar, 2026 |
| 4 | Steven Constantine Boyages | Director | 8,781 | 0 | 8,781 | 5.6% | 19 Mar, 2026 |
| 5 | Jonathan Scott Hurd | Director | 5,756 | 0 | 5,756 | 3.7% | 19 Mar, 2026 |
| 6 | Nicola Marion Fraser | Director | 5,000 | 0 | 5,000 | 3.2% | 19 Mar, 2026 |
| 7 | Jason Isenberg | Director | 5,000 | 0 | 5,000 | 3.2% | 19 Mar, 2026 |
| 8 | Christopher Towers | Director | 831 | 0 | 831 | 0.5% | 06 Oct, 2023 |
| 9 | Lawrence B Fisher | Director | 750 | 0 | 750 | 0.5% | 12 Oct, 2022 |
| 10 | George Margelis | Director | 750 | 0 | 750 | 0.5% | 12 Oct, 2022 |
| 11 | Tom Parmakellis | Director | 465 | 0 | 465 | 0.3% | 03 Jan, 2022 |
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.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 18 Mar, 2026 | Nicola Marion Fraser | Director | Acquired A | 5,000 | $0.00 | $0 | 5,000 | Direct |
| 18 Mar, 2026 | Steven Constantine Boyages | Director | Acquired A | 5,000 | $0.00 | $0 | 5,031 | Direct |
| 18 Mar, 2026 | Harry Simeonidis | Chief Executive Officer | Acquired A | 9,150 | $0.00 | $0 | 13,190 | Direct |
| 18 Mar, 2026 | Spiro Kevin Sakiris | Chief Financial Officer | Acquired A | 9,150 | $0.00 | $0 | 12,631 | Direct |
| 18 Mar, 2026 | Jason Isenberg | Director | Acquired A | 5,000 | $0.00 | $0 | 5,000 | Direct |
| 18 Mar, 2026 | Jonathan Scott Hurd | Director | Acquired A | 5,000 | $0.00 | $0 | 5,006 | Direct |
| 18 Mar, 2026 | Harry Simeonidis | Chief Executive Officer | Acquired A | 21,350 | $0.00 | $0 | 34,540 | Direct |
| 18 Mar, 2026 | Spiro Kevin Sakiris | Chief Financial Officer | Acquired A | 21,350 | $0.00 | $0 | 33,981 | Direct |
| 25 Sep, 2024 | Harry Simeonidis | Chief Executive Officer | Acquired A | 40,000 | $0.00 | $0 | 17 | Direct |
| 25 Sep, 2024 | Spiro Kevin Sakiris | Chief Financial Officer | Acquired A | 34,500 | $0.00 | $0 | 15 | Direct |
| 20 Mar, 2024 | Spiro Kevin Sakiris | Chief Financial Officer | Acquired X | 9,394 | — | — | 8 | Indirect |
| 20 Mar, 2024 | Spiro Kevin Sakiris | Chief Financial Officer | Disposed X | 9,394 | $0.00 | $0 | 0 | Indirect |
| 04 Oct, 2023 | Christopher Towers | Director | Acquired P | 9,090 | — | — | 41 | Direct |
| 04 Oct, 2023 | Christopher Towers | Director | Acquired P | 9,090 | — | — | 38 | Direct |
| 04 Oct, 2023 | Spiro Kevin Sakiris | Chief Financial Officer | Acquired P | 112,727 | — | — | 489 | Indirect |
| 04 Oct, 2023 | Spiro Kevin Sakiris | Chief Financial Officer | Acquired P | 112,727 | — | — | 470 | Indirect |
| 04 Oct, 2023 | Christopher Towers | Director | Acquired P | 9,090 | — | — | 38 | Direct |
| 04 Oct, 2023 | Spiro Kevin Sakiris | Chief Financial Officer | Acquired P | 112,727 | — | — | 470 | Indirect |
| 31 Aug, 2023 | Harry Simeonidis | Ceo | Acquired P | 100 | $460.82 | $46.08K | 17 | Direct |
| 01 Sep, 2023 | Harry Simeonidis | Ceo | Acquired P | 50 | $444.02 | $22.20K | 17 | Direct |