Osser Leonard
- SEC CIK
- 0001188354
No open-market purchases or sales filed in the past year.
Current role at each company
- NXL Nexalin Technology, Inc.10% Owneras of Sep 30, 2025
- MLSS Milestone Scientific Inc.Directoras of Oct 23, 2024
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- –
- 0 filings
- Net
- –
- Bought minus sold
- Companies
- 0
- With open-market trades
Trades
Every Form 4 that lists Osser Leonard as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
NXL Nexalin Technology, Inc.
10% Owner5 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 12, 2025 (view filing)12:58 PM ET | Sep 10 | 2 days | Osser Leonard and 1 other10% Owner, Other: Spouse | SSale | −23.1K | $0.0174 | −$402.81 | –112.8K after | Derivative |
| Sep 25, 2024 (view filing)5:26 PM ET | Sep 28, 2022 | 728 days | Osser Leonard and 1 otherOther: Spouse | PPurchase | +36.0K | $0.40 | +$14.4K | –136.0K after | AmendedDerivative |
| Sep 29, 2022 (view filing)12:30 PM ET | Sep 28 | 1 day | Elson Marilyn and 1 otherMs. Elson serves as CFO | PPurchase | +9.50K | $1.12 | +$10.6K | +1.2%835.2K after | |
| Sep 20, 2022 (view filing)2:29 PM ET | Sep 16 | 4 days | Elson Marilyn and 1 otherMs. Elson serves as CFO | PPurchase | +36.0K | $4.15 | +$149.4K | +4.6%825.7K after | |
| Sep 20, 2022 (view filing)2:29 PM ET | Sep 16 | 4 days | Elson Marilyn and 1 otherMs. Elson serves as CFO | PPurchase | +100.0K | $0.40 | +$40.0K | –100.0K after | Derivative |
MLSS Milestone Scientific Inc.
Director23 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 23, 2024 (view filing) | Oct 22 | 1 day | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −108.0K | $0.93 | −$100.4K | −2.3%4.61M after | |
| Aug 21, 2024 (view filing) | Aug 21 | Same day | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −141.9K | $0.95 | −$134.8K | −3.0%4.60M after | |
| Apr 20, 2022 (view filing) | Apr 18 | 2 days | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −9.84K | $1.12 | −$11.0K | −0.2%4.23M after | |
| Apr 13, 2022 (view filing) | Apr 11-12 | 2 days | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −16.7K | $1.19 | −$20.0K | −0.4%4.24M after | 2 lots |
| Apr 4, 2022 (view filing) | Apr 1-4 | 3 days | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −20.1K | $1.45 | −$29.1K | −0.5%4.25M after | 2 lots |
| Mar 29, 2022 (view filing) | Mar 28 | 1 day | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −7.11K | $1.33 | −$9.46K | −0.2%4.27M after | |
| Mar 22, 2022 (view filing) | Mar 21-22 | 1 day | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −15.6K | $1.28 | −$20.0K | −0.4%4.28M after | 2 lots |
| Mar 15, 2022 (view filing) | Mar 14-15 | 1 day | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −16.6K | $1.20 | −$20.0K | −0.4%4.29M after | 2 lots |
| Mar 8, 2022 (view filing) | Mar 7-8 | 1 day | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −13.9K | $1.43 | −$19.9K | −0.3%4.31M after | 2 lots |
| Mar 2, 2022 (view filing) | Feb 28-Mar 1 | 2 days | Osser LeonardDirector | SSaleCommon Stock, Par Value $0.001 | −15.1K | $1.32 | −$20.0K | −0.3%4.33M after | 2 lots |