Home

Linda M Biles

CIK 1823023 · Executive VP - Finance · last filed 2026-08-05

Linda M Biles is an Executive VP - Finance who has filed 17 SEC Form 4 insider transactions across 2 companies since 2020. The most recent filing, for MPTI, was dated Aug 11, 2026. Across all open-market trades the lifetime net is −$20.4K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $2.7M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Loading insider history…
Disclosed Exposure

$2.70M

Companies

2

Total Filings

17

Lifetime Open-Market Net

-$20.4K

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
MPTI Executive VP - Finance 29,941 $85.62 $2.56M -$20.4K 10 2026-08-05
LGL Vice President / Controller 18,820 $7.25 $136.4K $0 5 2026-01-21

Recent Filings

17 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-08-11 MPTI Notice (144) −1,218 -$103.6K EDGAR
2026-08-05 MPTI Grant (A) +1,565 $0 EDGAR
2026-05-06 MPTI Sell (S) −306 -$20.4K EDGAR
2026-04-29 MPTI Sell (S) — $0 EDGAR
2026-04-16 MPTI Sell (S) −720 $0 EDGAR
2026-04-14 MPTI Notice (144) −3,420 -$54.3K EDGAR
2026-04-07 MPTI Mixed +1,442 $0 EDGAR
2026-01-21 LGL Grant (A) +10,000 $0 EDGAR
2025-04-08 MPTI Grant (A) — $0 EDGAR
2024-04-23 MPTI Grant (A) +10,000 $239.0K EDGAR
Showing 1–10 of 17
Page 1 of 2
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.