Comparable stake leader
BP4 S.r.l.
SEC ownership of MILESTONE SCIENTIFIC INC.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000855683.
Disclosed value leader
Giandomenico Trombetta
Comparable rows
1/39
Latest evidence
30 Jun 2026
- Public ticker
- MLSS on NYSE
- Parsed ownership sources
-
13D/G, 3/4/5, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BP4 S.r.l.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
1 of 39
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BP4 S.r.l.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000855683
- Issuer location
- Livingston, NJ
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of MILESTONE SCIENTIFIC INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BP4 S.r.l.
Disclosed value leader
Giandomenico Trombetta
Comparable rows
1/39
Latest evidence
30 Jun 2026
13D/G
3/4/5
13F
Lead comparable stake: 12%
38 rows are not safely comparable across share classes.
13D/G row: BP4 S.r.l.
Showing 1-8 of 39 holder rows.
Quick read
BP4 S.r.l. leads the comparable SEC ownership view at 12%.
1 of 39 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BP4 S.r.l.'s linked filing trail.
Comparable ownership
Top 1
BP4 S.r.l.
12%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 39 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BP4 S.r.l. |
13D/G
3/4/5
10%+ Owner
|
12%
Reported 13D/G
· 01 Feb 2025
|
$9,020,286
9,672,192 shares
|
$0 | 01 Feb 2025 |
| Giandomenico Trombetta |
3/4/5
Director
|
—
denominator unverified
|
$9,272,360
10,418,382 shares
|
— | 28 Aug 2024 |
| Leonard Osser |
3/4/5
Director
|
—
denominator unverified
|
$4,284,400
4,606,882 shares
|
— | 22 Oct 2024 |
| Neal I. Goldman |
3/4/5
Director
|
—
denominator unverified
|
$1,696,214
1,905,858 shares
|
— | 28 Aug 2024 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$665,486
2,073,166 shares
|
— | 30 Jun 2026 |
| Michael McGeehan |
3/4/5
Director
|
—
denominator unverified
|
$446,757
575,273 shares
|
— | 19 Dec 2024 |
| Benedetta I. Casamento |
3/4/5
Director
|
—
denominator unverified
|
$359,997
404,491 shares
|
— | 28 Aug 2024 |
| Leonard M. Schiller |
3/4/5
Director
|
—
denominator unverified
|
$273,703
434,449 shares
|
— | 13 Jun 2022 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
No eligible buy or sell activity is available for this window. No eligible Buy or Sell transactions are available in this dataset since 30 Oct 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-11 of 11 reporting-owner rows connected to MILESTONE SCIENTIFIC INC.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
11
Largest Forms 3/4/5 holder
Giandomenico Trombetta
Net 12M change
$0
Latest report
22 Oct 2025
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Giandomenico Trombetta | Director | $9,272,360 | Mixed | 28 Aug 2024 | ||
| Leonard Osser | Director | $4,284,400 | Filing P/S | 22 Oct 2024 | ||
| BP4 S.r.l. | 10%+ Owner | $3,912,797 | Filing P/S | 22 Oct 2025 | ||
| Neal I. Goldman | Director | $1,696,214 | Mixed | 28 Aug 2024 | ||
| Michael McGeehan | Director | $446,757 | Filing P/S | 19 Dec 2024 | ||
| Benedetta I. Casamento | Director | $359,997 | Mixed | 28 Aug 2024 | ||
| Leonard M. Schiller | Director | $273,703 | Mixed | 13 Jun 2022 | ||
| Jan Adriaan Haverhals | President | $201,314 | Mixed | 17 May 2023 | ||
| Peter J. Milligan | President | $78,385 | Mixed | 01 Aug 2023 | ||
| Leslie Bernhard | Director | $49,939 | Mixed | 19 Dec 2022 | ||
| Scott L. Kahn | Chief Financial Officer | Mixed | 24 May 2021 |
Recent insider transactions for MILESTONE SCIENTIFIC INC.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.