Over the 90-day window ending February 07, 2026, Citius Oncology's three dominant insider ownership positions are held by Chief Executive Officer Leonard L Mazur (1.70Mn shares), Secretary Myron Z Holubiak (950.00K shares), Chief Medical Officer Myron Czuczman (825.00K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Leonard L Mazur | Chief Executive Officer | 1,700,000 | 01 Dec, 2025 |
| Myron Z Holubiak | Secretary | 950,000 | 01 Dec, 2025 |
| Jaime Bartushak | Chief Financial Officer | 825,000 | 01 Dec, 2025 |
| Myron Czuczman | Chief Medical Officer | 825,000 | 01 Dec, 2025 |
| Joel David Mayersohn | 321,228 | 01 Dec, 2025 | |
| Robert Joseph Smith | 300,000 | 01 Dec, 2025 | |
| Dennis M Mcgrath | 300,000 | 01 Dec, 2025 | |
| Suren G Dutia | 300,000 | 01 Dec, 2025 | |
| Carol Webb | 300,000 | 01 Dec, 2025 | |
| Eugene Myron Holuka | 300,000 | 01 Dec, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 19 Sep, 2025 | Myron Z Holubiak | Common Stock | A | 850,000 | $0.00 | 850,000 | D | A |
| 19 Sep, 2025 | Myron Z Holubiak | Common Stock | A | 100,000 | $0.00 | 100,000 | I | A |
| 19 Sep, 2025 | Myron Z Holubiak | Common Stock | A | 850,000 | $0.00 | 850,000 | D | A |
| 19 Sep, 2025 | Dennis M Mcgrath | Common Stock | A | 300,000 | $0.00 | 300,000 | D | A |
| 19 Sep, 2025 | Dennis M Mcgrath | Common Stock | A | 300,000 | $0.00 | 300,000 | D | A |
| 19 Sep, 2025 | Leonard L Mazur | Common Stock | A | 1,700,000 | $0.00 | 1,700,000 | D | A |
| 19 Sep, 2025 | Leonard L Mazur | Common Stock | A | 1,700,000 | $0.00 | 1,700,000 | D | A |
| 19 Sep, 2025 | Suren G Dutia | Common Stock | A | 300,000 | $0.00 | 300,000 | D | A |
| 19 Sep, 2025 | Suren G Dutia | Common Stock | A | 300,000 | $0.00 | 300,000 | D | A |
| 19 Sep, 2025 | Joel David Mayersohn | Common Stock | A | 300,000 | $0.00 | 321,228 | D | A |
| 19 Sep, 2025 | Joel David Mayersohn | Common Stock | A | 300,000 | $0.00 | 321,228 | D | A |
| 19 Sep, 2025 | Carol Webb | Common Stock | A | 300,000 | $0.00 | 300,000 | D | A |
| 19 Sep, 2025 | Carol Webb | Common Stock | A | 300,000 | $0.00 | 300,000 | D | A |
| 19 Sep, 2025 | Eugene Myron Holuka | Common Stock | A | 300,000 | $0.00 | 300,000 | D | A |
| 19 Sep, 2025 | Eugene Myron Holuka | Common Stock | A | 300,000 | $0.00 | 300,000 | D | A |
| 19 Sep, 2025 | Jaime Bartushak | Common Stock | A | 825,000 | $0.00 | 825,000 | D | A |
| 19 Sep, 2025 | Jaime Bartushak | Common Stock | A | 825,000 | $0.00 | 825,000 | D | A |
| 19 Sep, 2025 | Myron Czuczman | Common Stock | A | 825,000 | $0.00 | 825,000 | D | A |
| 19 Sep, 2025 | Myron Czuczman | Common Stock | A | 825,000 | $0.00 | 825,000 | D | A |
| 19 Sep, 2025 | Robert Joseph Smith | Common Stock | A | 300,000 | $0.00 | 300,000 | D | A |