As of September 29, 2026, the three largest insider holders of CTOR are Leonard L Mazur (Chief Executive Officer, 1.70Mn shares), Myron Z Holubiak (Secretary, 850.00K shares), Jaime Bartushak (Chief Financial Officer, 825.00K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Leonard L Mazur | Chief Executive Officer | 1,700,000 | 0 | 1,700,000 | 28.2% | 01 Dec, 2025 |
| 2 | Myron Z Holubiak | Secretary | 850,000 | 0 | 850,000 | 14.1% | 01 Dec, 2025 |
| 3 | Jaime Bartushak | Chief Financial Officer | 825,000 | 0 | 825,000 | 13.7% | 01 Dec, 2025 |
| 4 | Myron Czuczman | Chief Medical Officer | 825,000 | 0 | 825,000 | 13.7% | 01 Dec, 2025 |
| 5 | Joel David Mayersohn | Director | 321,228 | 0 | 321,228 | 5.3% | 01 Dec, 2025 |
| 6 | Robert Joseph Smith | Director | 300,000 | 0 | 300,000 | 5.0% | 01 Dec, 2025 |
| 7 | Dennis M Mcgrath | Director | 300,000 | 0 | 300,000 | 5.0% | 01 Dec, 2025 |
| 8 | Suren G Dutia | Director | 300,000 | 0 | 300,000 | 5.0% | 01 Dec, 2025 |
| 9 | Carol Webb | Director | 300,000 | 0 | 300,000 | 5.0% | 01 Dec, 2025 |
| 10 | Eugene Myron Holuka | Director | 300,000 | 0 | 300,000 | 5.0% | 01 Dec, 2025 |
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 |
|---|---|---|---|---|---|---|---|---|
| 19 Sep, 2025 | Eugene Myron Holuka | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Myron Czuczman | Chief Medical Officer | Acquired A | 825,000 | $0.00 | $0 | 825,000 | Direct |
| 19 Sep, 2025 | Joel David Mayersohn | Director | Acquired A | 300,000 | $0.00 | $0 | 321,228 | Direct |
| 19 Sep, 2025 | Suren G Dutia | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Dennis M Mcgrath | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Leonard L Mazur | Chief Executive Officer | Acquired A | 1,700,000 | $0.00 | $0 | 1,700,000 | Direct |
| 19 Sep, 2025 | Jaime Bartushak | Chief Financial Officer | Acquired A | 825,000 | $0.00 | $0 | 825,000 | Direct |
| 19 Sep, 2025 | Robert Joseph Smith | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Carol Webb | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Myron Z Holubiak | Secretary | Acquired A | 850,000 | $0.00 | $0 | 850,000 | Direct |
| 19 Sep, 2025 | Eugene Myron Holuka | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Myron Z Holubiak | Secretary | Acquired A | 850,000 | $0.00 | $0 | 850,000 | Direct |
| 19 Sep, 2025 | Joel David Mayersohn | Director | Acquired A | 300,000 | $0.00 | $0 | 321,228 | Direct |
| 19 Sep, 2025 | Carol Webb | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Suren G Dutia | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Robert Joseph Smith | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Dennis M Mcgrath | Director | Acquired A | 300,000 | $0.00 | $0 | 300,000 | Direct |
| 19 Sep, 2025 | Leonard L Mazur | Chief Executive Officer | Acquired A | 1,700,000 | $0.00 | $0 | 1,700,000 | Direct |
| 19 Sep, 2025 | Jaime Bartushak | Chief Financial Officer | Acquired A | 825,000 | $0.00 | $0 | 825,000 | Direct |
| 19 Sep, 2025 | Myron Czuczman | Chief Medical Officer | Acquired A | 825,000 | $0.00 | $0 | 825,000 | Direct |