Linda M. Biles - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 4, 2026
Linda M. Biles has filed 1 SEC Form 4 filing across 1 company in the last 90 days - selling. Lifetime open-market sales: $20K.
Profile
Linda M. Biles serves as Executive VP - Finance of M-tron Industries, Inc. (MPTI). Biles has also held reporting roles at LGL GROUP INC (LGL). Biles has reported 5 insider filings with the SEC since 2026. The most recent filing was in May 2026.
| Role | Executive VP - Finance |
|---|---|
| Notability | 40/100 |
Board memberships
- M-tron Industries, Inc.
- LGL GROUP INC
Reported roles
- Executive VP - Finance
- Vice President / Controller
Awards & honors
- Oversees accounting operations and financial reporting for LGL Group Inc
Trading Pattern
InsiderAlpha's records for Linda M. Biles go back to 2026: 5 primary Form 4 filings, an average of 5.0 per year. 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 Linda M. Biles 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.
- Executive VP - Finance at M-tron Industries, Inc. (MPTI) - 4 filings, 2026
- Vice President / Controller at LGL GROUP INC (LGL) - 1 filing, 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-06 | MPTI | M-tron Industries, Inc. | S - Open-market sale | 306 | $66.78 | $20K |
| 2026-04-16 | MPTI | M-tron Industries, Inc. | S - Open-market sale | 720 | $0.00 | |
| 2026-04-07 | MPTI | M-tron Industries, Inc. | A - Grant or award | 2.1K | $0.00 | |
| 2026-04-07 | MPTI | M-tron Industries, Inc. | F - Tax withholding / forfeiture | 617 | $0.00 | |
| 2026-01-21 | LGL | LGL GROUP INC | A - Grant or award | 10.0K | $0.00 |
Companies - Last 90 Days
- M-tron Industries, Inc. (MPTI) - 1 filing, last 2026-05-06
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Linda M. Biles has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Cameron Pforr - $56K of MPTI open-market activity in the last 12 months
- William Arnold Drafts - $24K of MPTI open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Adam C. Lipson
- Brian Guan-Chyun Liu
- Nicholas Reyland Liuzza Jr.
- David M. Lobach Jr.
- 7. Cooperative Ua Lsp
- Brandon Lutnick
- Lynrock Lake LP
- Lynx1 Capital Management LP
Frequently Asked Questions
Who is Linda M. Biles?
Linda M. Biles serves as Executive VP - Finance of M-tron Industries, Inc. (MPTI). Biles has also held reporting roles at LGL GROUP INC (LGL). Biles has reported 5 insider filings with the SEC since 2026. The most recent filing was in May 2026.…
How many SEC Form 4 filings has Linda M. Biles submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Linda M. Biles been buying or selling stock?
Recorded transactions: 0 open-market purchases and 5 open-market sales ($20K) across all tracked filings.
Where can I see all of Linda M. Biles'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 Linda M. Biles profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.