Leslie A. Moriyama - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Leslie A. Moriyama is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days. Lifetime open-market purchases: $585K.
Profile
Leslie A. Moriyama holds the role of Chief Financial Officer at DORCHESTER MINERALS, L.P. (DMLP). Moriyama has reported 6 insider filings with the SEC since 2024. The most recent filing was in December 2025.
| Role | Chief Financial Officer |
|---|---|
| Notability | 34/100 |
Board memberships
- DORCHESTER MINERALS, L.P.
Reported roles
- Chief Financial Officer
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| Total purchases tracked | 3 |
|---|
Trading Pattern
InsiderAlpha's records for Leslie A. Moriyama go back to 2024: 6 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $195K (3 buys totaling $585K). The largest single buy on record is $415K of DMLP in 2024. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Leslie A. Moriyama has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Chief Financial Officer at DORCHESTER MINERALS, L.P. (DMLP) - 6 filings, 2024 to 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2025-12-05 | DMLP | DORCHESTER MINERALS, L.P. | F - Tax withholding / forfeiture | 1.6K | $0.00 | |
| 2025-12-05 | DMLP | DORCHESTER MINERALS, L.P. | M - Option exercise | 4.0K | $0.00 | |
| 2025-12-03 | DMLP | DORCHESTER MINERALS, L.P. | F - Tax withholding / forfeiture | 6.5K | $21.63 | $140K |
| 2025-12-03 | DMLP | DORCHESTER MINERALS, L.P. | A - Grant or award | 16.0K | $21.63 | $346K |
| 2025-11-28 | DMLP | DORCHESTER MINERALS, L.P. | P - Open-market purchase | 3.0K | $21.50 | $65K |
| 2024-12-17 | DMLP | DORCHESTER MINERALS, L.P. | F - Tax withholding / forfeiture | 1.6K | $0.00 | |
| 2024-12-17 | DMLP | DORCHESTER MINERALS, L.P. | M - Option exercise | 4.4K | $0.00 | |
| 2024-12-05 | DMLP | DORCHESTER MINERALS, L.P. | F - Tax withholding / forfeiture | 5.5K | $34.41 | $191K |
| 2024-12-05 | DMLP | DORCHESTER MINERALS, L.P. | P - Open-market purchase | 12.1K | $34.41 | $415K |
| 2024-11-15 | DMLP | DORCHESTER MINERALS, L.P. | P - Open-market purchase | 3.2K | $32.60 | $105K |
Most Active Insiders Right Now
Leslie A. Moriyama has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Sam Levinson
- Paul S. Levy
- Liberty 77 Capital L.P.
- LIBERTY MUTUAL HOLDING CO
- Alfred Lin
- Lincoln Financial Investments Corp
- LINCOLN NATIONAL LIFE INSURANCE CO /IN/
- Adam C. Lipson
Frequently Asked Questions
Who is Leslie A. Moriyama?
Leslie A. Moriyama holds the role of Chief Financial Officer at DORCHESTER MINERALS, L.P. (DMLP). Moriyama has reported 6 insider filings with the SEC since 2024. The most recent filing was in December 2025.…
Has Leslie A. Moriyama been buying or selling stock?
Recorded transactions: 3 open-market purchases ($585K) and 0 open-market sales across all tracked filings.
How accurate is Leslie A. Moriyama's historical track record?
Across 3 tracked purchases, Leslie A. Moriyama averaged no 30-day data yet with a win rate pending. InsiderAlpha rates the track record at –/5 stars.
Where can I see all of Leslie A. Moriyama's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Leslie A. Moriyama profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.