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SC Filed 2023-12-11 Event — SEC 0000807249-23-000168 →

GAMCO INVESTORS, INC. ET AL M-tron Industries, Inc. MPTI

Stake: Shares:

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
58 transactions
10 buys · 14 sales · 2 awards/exercises
Issuer Cluster
4 13D/G filings on this issuer
3 other filings besides this one
Filer Track Record
200 filings by this filer
199 other filings in the data moat
Short Interest · settle 2026-07-15
DTC 1.15
243,549 shares short · +5.4% vs prior

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-05-04 Drafts William Arnold officer Sale 361 $66.78 $24K
2026-05-04 Pforr Cameron officer Sale 840 $66.78 $56K
2026-05-04 Biles Linda M officer Sale 306 $66.78 $20K
2026-04-29 Pforr Cameron officer Option exercise 220 $40.32 $9K
2026-04-28 Pforr Cameron officer Option exercise 220 $40.32 $9K
2026-04-27 Arteaga Ivan director X 24 $59.00 $1K
2026-04-20 GABELLI MARC director X 3,276 $59.00 $193K
2026-04-20 GABELLI MARC director X 16,380 $59.00 $966K
2026-04-20 Susanto Hendi director X 1,071 $59.00 $63K
2026-04-20 Susanto Hendi director X 5,355 $59.00 $316K
2026-04-14 Susanto Hendi director X 454 $59.00 $27K
2026-04-14 Biles Linda M officer Sale 720
2026-04-14 Biles Linda M officer Sale 2,700 $59.00 $159K
2026-04-14 Susanto Hendi director X 2,274 $59.00 $134K
2026-04-14 Drafts William Arnold officer Sale 540 $59.00 $32K
2026-04-14 Biles Linda M officer Sale 2,700 $59.00 $159K
2026-04-13 Drafts William Arnold officer Sale 7,609 $59.00 $449K
2026-04-13 Arteaga Ivan director X 870 $59.00 $51K
2026-04-10 Arteaga Ivan director X 174 $59.00 $10K
2026-04-09 Biles Linda M officer Sale 24,643 $59.00 $1.45M
2026-04-07 Pforr Cameron officer X 100 $59.00 $6K
2026-04-07 Pforr Cameron officer X 500 $59.00 $30K
2026-04-07 Pforr Cameron officer Sale 21,500 $59.00 $1.27M
2026-04-06 Drafts William Arnold officer Sale 3,600 $59.00 $212K
2026-04-02 Pforr Cameron officer Award 5,646
Showing 25 of 58

Other 13D/G Filings on M-tron Industries, Inc.

FiledFormFilerStakeShares
2024-01-08 SC GABELLI MARC view →
2023-12-05 SC GABELLI MARC view →
2023-10-10 SC GAMCO INVESTORS, INC. ET AL view →

Other Filings by GAMCO INVESTORS, INC. ET AL

FiledFormIssuerStakeShares
2026-07-20 SCHEDULE 13D/A LGL GROUP INC 0 view →
2026-06-29 SCHEDULE 13D/A Crimson Wine Group, Ltd CWGL 1.80% 0 view →
2026-04-09 SCHEDULE 13D/A CORE MOLDING TECHNOLOGIES INC CMT 4.10% 0 view →
2026-01-29 SCHEDULE MONRO, INC. MNRO 5.80% 1,740,697 view →
2026-01-28 SCHEDULE BEL FUSE INC /NJ BELFB 3.00% 63,800 view →
2026-01-13 SCHEDULE LENNAR CORP /NEW/ LEN-B 3.60% 1,141,300 view →
2026-01-08 SCHEDULE ASTEC INDUSTRIES INC ASTE 5.10% 1,167,886 view →
2025-12-29 SCHEDULE Gabelli Healthcare & WellnessRx Trust GRX 33.90% 2,400,000 view →
2025-12-29 SCHEDULE GABELLI DIVIDEND & INCOME TRUST GDV-PK 18.50% 5,430,000 view →
2025-12-29 SCHEDULE GOLDEN ENTERTAINMENT, INC. GDEN 4.20% 1,087,600 view →
2025-11-07 SCHEDULE PARK OHIO HOLDINGS CORP PKOH 8.50% 1,220,559 view →
2025-11-07 SCHEDULE MONRO, INC. MNRO 4.80% 1,440,675 view →
2025-11-03 SCHEDULE Gabelli Healthcare & WellnessRx Trust GRX 40.50% 2,200,000 view →
2025-10-14 SCHEDULE LENNAR CORP /NEW/ LEN-B 3.60% 1,141,400 view →
2025-09-30 SCHEDULE TREDEGAR CORP TG 17.20% 5,994,705 view →
2025-09-29 SCHEDULE DallasNews Corp view →
2025-09-15 SCHEDULE NOBILITY HOMES INC NOBH 8.40% 273,350 view →
2025-08-01 SCHEDULE Paramount Global 6.20% 2,531,269 view →
2025-07-01 SCHEDULE Gabelli Healthcare & WellnessRx Trust GRX 12.00% 400,000 view →
2025-04-03 SCHEDULE VOXX International Corp view →
Showing 20 of 199

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