MLSS · Insider Trading

Milestone Scientific, Inc. Common Stock

Every open-market purchase and sale reported by MLSS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
4
code P
Sales
23
code S
Reporting Insiders
2
current holders
MLSS — Recent Form 4 Transactions (latest 2025-10-29)
FiledInsiderRole TypeSharesValue
2025-10-29 S.r.l. BP4 10%+ Owner Sell −194,427 −$84.88K
2025-10-23 S.r.l. BP4 10%+ Owner Sell −64,034 −$28.47K
2025-10-17 S.r.l. BP4 10%+ Owner Sell −50,158 −$27.27K
2025-10-09 S.r.l. BP4 10%+ Owner Sell −40,000 −$18.45K
2025-10-09 S.r.l. BP4 10%+ Owner Sell −19,210 −$8.64K
2025-09-16 S.r.l. BP4 10%+ Owner Sell −10,000 −$5.94K
2025-07-22 S.r.l. BP4 10%+ Owner Sell −10,000 −$6.40K
2025-07-10 S.r.l. BP4 10%+ Owner Sell −92,900 −$62.80K
2025-07-02 S.r.l. BP4 10%+ Owner Sell −27,882 −$21.88K
2025-06-20 S.r.l. BP4 10%+ Owner Sell −11,749 −$10.49K
2025-06-16 S.r.l. BP4 10%+ Owner Sell −23,797 −$21.46K
2025-06-11 S.r.l. BP4 10%+ Owner Sell −50,366 −$45.71K
2025-06-10 S.r.l. BP4 10%+ Owner Sell −87,055 −$78.71K
2025-06-06 S.r.l. BP4 10%+ Owner Sell −14,000 −$12.96K
2025-06-03 S.r.l. BP4 10%+ Owner Sell −22,118 −$20.74K
2025-05-30 S.r.l. BP4 10%+ Owner Sell −17,617 −$16.91K
2024-12-20 Michael McGeehan Director Sell −20,000 −$15.53K
2024-10-23 Leonard Osser Director Sell −107,984 −$100.43K
2024-09-27 Michael McGeehan Director Sell −209 −$209
2024-09-24 Michael McGeehan Director Sell −2,800 −$2.80K
2024-08-30 Neal I Goldman Director A +134,832 +$120.00K
2024-08-30 Benedetta I Casamento Director A +134,834 +$120.00K
2024-08-30 Michael McGeehan Director A +123,560 +$109.97K
2024-08-30 Leonard Osser Director A +112,356 +$100.00K
2024-08-30 Giandomenico Trombetta Director A +112,356 +$100.00K
2024-08-21 Leonard Osser Director Sell −141,913 −$134.82K
2024-04-23 Neal I Goldman Director A +22,127 +$12.17K
2024-04-22 Neal I Goldman Director A +56,065 +$30.28K
2023-12-13 Neal I Goldman Director A +125,000 +$78.75K
2023-10-23 Giandomenico Trombetta Director D −3,400 −$3.26K
2023-10-19 Giandomenico Trombetta Director D −21,600 −$20.43K
2023-08-10 Benedetta I Casamento Director A +134,831 +$120.00K
2023-08-10 Giandomenico Trombetta Director A +112,360 +$100.00K
2023-08-10 Peter J Milligan President A +46,296 +$50.00K
2023-08-10 Jan Adriaan Haverhals President A +165,841 +$167.50K
2023-08-10 Neal I Goldman Director A +134,831 +$120.00K
2023-08-10 Leonard Osser Director A +112,360 +$100.00K
2022-12-20 Neal I Goldman Director Buy +55,326 +$27.66K
2022-12-20 Leslie Bernhard Director Sell −79,268 −$39.63K
2022-11-28 Leslie Bernhard Director Sell −14,358 −$9.19K
2022-11-28 Neal I Goldman Director Buy +45,095 +$27.96K
2022-11-22 Neal I Goldman Director Buy +54,905 +$34.59K
2022-10-11 Leonard Osser Director A +121,951 +$100.00K
2022-10-11 Benedetta I Casamento Director A +121,951 +$100.00K
2022-10-11 Michael McGeehan Director A +125,000 +$102.50K
2022-10-11 Neal I Goldman Director A +121,951 +$100.00K
2022-10-11 Leslie Bernhard Director A +158,536 +$130.00K
2022-10-11 Giandomenico Trombetta Director A +121,951 +$100.00K
2022-10-11 Leonard M Schiller Director A +128,049 +$105.00K
2022-06-17 Neal I Goldman Director Buy +9,720 +$7.29K
MLSS — Current Insider Holders
InsiderRole Shares HeldValue
S.r.l. BP4 10%+ Owner 8,996,765 $2.72M
Michael McGeehan Director 575,273 $174.02K
MLSS Insider Trading FAQ
Who are the insiders at MLSS?
2 officers, directors and 10%+ beneficial owners currently report holdings in MLSS via SEC Form 4.
Are MLSS insiders buying or selling?
Across the 50 most recent Form 4 filings for MLSS, 4 were open-market purchases (code P) and 23 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is MLSS insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent MLSS filing is dated 2025-10-29.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the MLSS quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.