As of June 16, 2026, Milestone Scientific's top three insider holders are Giandomenico Trombetta (Director, 10.42Mn shares), S.R.L. Bp4 (TenPercentOwner, 8.90Mn shares), Leonard Osser (Director, 8.83Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Neal I Goldman | - | 1,905,858 | 0 | 30 Aug, 2024 |
| Leonard Osser | - | 0 | 8,829,958 | 03 Jan, 2022 |
| Leonard M Schiller | - | 338,412 | 0 | 15 Jun, 2022 |
| Leslie Bernhard | - | 79,268 | 0 | 19 Dec, 2022 |
| Benedetta I Casamento | - | 404,491 | 0 | 30 Aug, 2024 |
| Peter J Milligan | President | 124,421 | 0 | 10 Aug, 2023 |
| Giandomenico Trombetta | - | 10,418,382 | 0 | 30 Aug, 2024 |
| S.R.L. Bp4 | - | 8,896,765 | 0 | 29 Oct, 2025 |
| Michael Mcgeehan | - | 575,273 | 0 | 20 Dec, 2024 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 22 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 14,427 | $0.45 | 9,076,765 | D | S |
| 23 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 80,000 | $0.43 | 8,996,765 | D | S |
| 24 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 100,000 | $0.44 | 8,896,765 | D | S |
| 20 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 24,034 | $0.45 | 9,131,192 | D | S |
| 21 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 40,000 | $0.44 | 9,091,192 | D | S |
| 10 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 10,158 | $0.55 | 9,185,226 | D | S |
| 13 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 10,000 | $0.55 | 9,175,226 | D | S |
| 14 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 30,000 | $0.54 | 9,155,226 | D | S |
| 07 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 10,000 | $0.45 | 9,225,384 | D | S |
| 08 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 30,000 | $0.47 | 9,195,384 | D | S |
| 03 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 9,210 | $0.45 | 9,245,384 | D | S |
| 03 Oct, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 10,000 | $0.45 | 9,235,384 | D | S |
| 11 Sep, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 10,000 | $0.59 | 9,256,972 | D | S |
| 17 Jul, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 10,000 | $0.64 | 9,298,724 | D | S |
| 03 Jul, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 50,853 | $0.67 | 9,350,846 | D | S |
| 07 Jul, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 30,558 | $0.68 | 9,320,288 | D | S |
| 08 Jul, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 11,489 | $0.69 | 9,308,799 | D | S |
| 23 Jun, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 5,933 | $0.86 | 9,439,557 | D | S |
| 24 Jun, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 10,000 | $0.81 | 9,429,577 | D | S |
| 25 Jun, 2025 | S.R.L. Bp4 | Common Stock, Par Value $0.001 | D | 1,300 | $0.77 | 9,438,257 | D | S |