Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

M-tron Industries, Inc.

MPTI · NYSE · CIK 0001902314 · Technology · Electronic Components

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

7 Form 4 transaction lines observed in the same window
4 sales · 3 option, withholding, award, gift or other lines

Last qualifying purchase2025-06-27 · Drafts William Arnold · $40.5K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Pforr CameronCEO and CFO
○○▼
Biles Linda MExecutive VP - Finance
▼▼
Drafts William ArnoldPresident
▼
Arteaga IvanDirector
○
● Purchase▼ Sale○ Other

—

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2025-06-27 · Drafts William Arnold.

Recent Form 4 activity

0Purchases
5Sales
29Other Form 4 lines
31SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING4 sale line(s) · context only
OTHER3 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
415,769
Previous report
380,589
Avg daily volume
82,076
Days to cover
5.1

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2025-06-27Drafts William ArnoldPurchase (P)Common Stock, par value $0.01 per share1,000USD 40.50USD 40,500SEC filing ↗
2023-11-22FERRANTINO MICHAEL J JRPurchase (P)Common Stock50USD 37.50USD 1,875SEC filing ↗
2023-09-13GABELLI MARIO JPurchase (P)Common Stock200USD 18.83USD 3,766SEC filing ↗
2022-12-01Tivy James WilliamPurchase (P)Common Stock2,500USD 9.75USD 24,375SEC filing ↗

Form 4 evidence

34 transaction lines in the latest 365-day window; 143 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-11Biles Linda MSale (S)Common Stock1,218USD 85.05USD 103,591SEC filing ↗
2026-05-04Pforr CameronSale (S)Common Stock840USD 66.78USD 56,095SEC filing ↗
2026-05-04Drafts William ArnoldSale (S)Common Stock361USD 66.78USD 24,108SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-11Biles Linda MSale (S)Common Stock1,218USD 85.05USD 103,591SEC filing ↗
2026-05-04Pforr CameronSale (S)Common Stock840USD 66.78USD 56,095SEC filing ↗
2026-05-04Drafts William ArnoldSale (S)Common Stock361USD 66.78USD 24,108SEC filing ↗
2026-05-04Biles Linda MSale (S)Common Stock306USD 66.78USD 20,435SEC filing ↗
2026-04-29Pforr CameronOption exercise / conversion (M)Common Stock220USD 40.32USD 8,870SEC filing ↗
2026-04-28Pforr CameronOption exercise / conversion (M)Common Stock220USD 40.32USD 8,870SEC filing ↗
2026-04-27Arteaga IvanX (X)Common Stock24USD 59.00USD 1,416SEC filing ↗
2026-04-20GABELLI MARCX (X)Common Stock3,276USD 59.00USD 193,284SEC filing ↗
2026-04-20Susanto HendiX (X)Common Stock1,071USD 59.00USD 63,189SEC filing ↗
2026-04-14Susanto HendiX (X)Common Stock454USD 59.00USD 26,786SEC filing ↗
2026-04-14Biles Linda MSale (S)Common Stock720USD 0.00USD 0SEC filing ↗
2026-04-10Arteaga IvanX (X)Common Stock174USD 59.00USD 10,266SEC filing ↗
2026-04-07Pforr CameronX (X)Common Stock100USD 59.00USD 5,900SEC filing ↗
2026-04-02Pforr CameronAward / grant (A)Common Stock5,646USD 0.00USD 0SEC filing ↗
2026-04-02Drafts William ArnoldAward / grant (A)Common Stock2,428USD 0.00USD 0SEC filing ↗
2026-04-02Biles Linda MAward / grant (A)Common Stock2,059USD 0.00USD 0SEC filing ↗
2026-03-19Pforr CameronAward / grant (A)Common Stock3,805USD 0.00USD 0SEC filing ↗
2026-03-19Drafts William ArnoldAward / grant (A)Common Stock2,840USD 0.00USD 0SEC filing ↗
2026-03-19Biles Linda MAward / grant (A)Common Stock1,565USD 0.00USD 0SEC filing ↗
2026-03-19Susanto HendiAward / grant (A)Common Stock242USD 0.00USD 0SEC filing ↗
2026-03-19Mega John SAward / grant (A)Common Stock242USD 0.00USD 0SEC filing ↗
2026-03-19LaPenta Robert V JrAward / grant (A)Common Stock242USD 0.00USD 0SEC filing ↗
2026-03-19LAZAR BELAward / grant (A)Common Stock242USD 0.00USD 0SEC filing ↗
2026-03-19Goldman David MAward / grant (A)Common Stock242USD 0.00USD 0SEC filing ↗
2026-03-19GABELLI MARCAward / grant (A)Common Stock242USD 0.00USD 0SEC filing ↗
2026-03-19Arteaga IvanAward / grant (A)Common Stock242USD 0.00USD 0SEC filing ↗
2026-01-06Arteaga IvanX (X)Common Stock35USD 47.50USD 1,662SEC filing ↗
2025-12-23Goldman David MX (X)Common Stock325USD 47.50USD 15,438SEC filing ↗
2025-12-23Susanto HendiX (X)Common Stock892USD 47.50USD 42,370SEC filing ↗
2025-12-22Pforr CameronX (X)Common Stock2,000USD 47.50USD 95,000SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerMPTI
CIK0001902314
SectorTechnology
IndustryElectronic Components Yahoo Finance
SEC SIC3679 Electronic Components, NEC
ExchangeNYSE

Data coverage

Local Form 4 history143 transaction lines from 2022-10-07 to 2026-08-11
4 P purchase lines · 41 S sale lines · 98 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.