EFOI Insider Trading

EFOI · full profile →Last filing Nov 26, 2025
Mixed · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$0
0 insiders
Net Insider Flow
$0
open market, 180d
Reporting Insiders
0
0 P/S transactions
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Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Recent Form 4 Transactions

49 shown
DateInsiderRoleActionSharesPriceValue
Nov 26, 2025Huang Chiao ChiehChief Executive Officer, Director, 10% OwnerBuy(P)262K$2.29$600K
Aug 15, 2025Huang Chiao ChiehChief Executive Officer, Director, 10% OwnerBuy(P)265K$1.89$500K
Jun 23, 2025Huang Chiao ChiehChief Executive Officer, Director, 10% OwnerBuy(P)110K$1.81$200K
Mar 27, 2025Huang Chiao ChiehChief Executive Officer, Director, 10% OwnerBuy(P)104K$1.93$200K
Jun 29, 2023Huang Chiao ChiehDirector, 10% OwnerGrant(A)343K$1.76$604K
Apr 28, 2023Gianas Randy HarrisonVP Operations & EngineeringGrant(A)1K$3.04$4K
Apr 28, 2023Matt Lesley A.Chief Executive OfficerGrant(A)40K$0.43$17K
Apr 28, 2023Warren James Raymond IIISVP, GC & Corp. SecretaryGrant(A)30K$0.43$13K
Mar 30, 2023Huang GinaDirector, 10% OwnerGrant(A)500K$0.50$250K
Mar 28, 2023Huang Chiao ChiehDirector, 10% OwnerGrant(A)109K$0.56$61K
Feb 24, 2023Huang GinaDirector, 10% OwnerGrant(A)803K$0.50$402K
Jan 17, 2023Huang GinaDirector, 10% OwnerGrant(A)1.5M$0.56$813K
Jan 10, 2023Huang GinaDirector, 10% OwnerGrant(A)326K$0.46$150K
Jan 5, 2023Huang GinaDirector, 10% OwnerGrant(A)258K$0.39$101K
Sep 28, 2022Warren James Raymond IIISVP, GC & Corp. SecretaryOption exercise(M)800$0
Sep 28, 2022Warren James Raymond IIISVP, GC & Corp. SecretaryOption exercise(M)800$0
Sep 12, 2022Matt Lesley A.Chief Executive OfficerGrant(A)150K$0
Sep 4, 2022den Daas KajDirectorGrant(A)10K$0
Aug 1, 2022Griffin Clifford R.SVP, Corp. Controller & CAOGrant(A)6K$0.74$4K
Jun 22, 2022Socolof StephenChairman and Interim CEO, DirectorOption exercise(M)5K$0
Jun 22, 2022Socolof StephenChairman and Interim CEO, DirectorOption exercise(M)5K$0
Jun 22, 2022Parker Jeffery RobertDirectorOption exercise(M)10K$0
Jun 22, 2022Parker Jeffery RobertDirectorOption exercise(M)10K$0
Jun 22, 2022Cheng Jennifer YDirectorOption exercise(M)5K$0
Jun 22, 2022Cheng Jennifer YDirectorOption exercise(M)5K$0
Jun 22, 2022Jag International Co Ltd.10% OwnerOption exercise(M)5K$0
Jun 22, 2022Jag International Co Ltd.10% OwnerOption exercise(M)5K$0
Jun 22, 2022Politziner PhilipDirectorOption exercise(M)5K$0
Jun 22, 2022Politziner PhilipDirectorOption exercise(M)5K$0
Jun 22, 2022Lagarto Brian JDirectorOption exercise(M)10K$0
Jun 22, 2022Lagarto Brian JDirectorOption exercise(M)10K$0
Feb 22, 2022Parker Jeffery RobertDirectorGrant(A)10K$0
Feb 19, 2022Lagarto Brian JDirectorGrant(A)10K$0
Feb 11, 2022Socolof StephenInterim CEO, DirectorGrant(A)5K$0
Feb 11, 2022Nestor Tod ACOO and CFOGrant(A)20K$0
Feb 11, 2022Cheng Jennifer YDirectorGrant(A)5K$0
Feb 11, 2022Warren James Raymond IIISVP, GC & Corp. SecretaryGrant(A)15K$1.48$22K
Feb 11, 2022Huang GinaDirector, 10% OwnerGrant(A)5K$0
Feb 11, 2022Politziner PhilipDirectorGrant(A)5K$0
Feb 11, 2022Galluccio Gregory SSr. VP, Product Mgmt & Engin.Grant(A)15K$0
Sep 28, 2021Warren James Raymond IIISVP, GC & Corp. SecretaryOption exercise(M)800$0
Sep 28, 2021Warren James Raymond IIISVP, GC & Corp. SecretaryOption exercise(M)800$0
Aug 25, 2021Politziner PhilipDirectorBuy(P)3K$3.35$10K
Aug 18, 2021Socolof StephenDirectorBuy(P)4K$2.80$10K
Aug 16, 2021Tu JamesChairman and CEO, Director, 10% OwnerBuy(P)5K$2.70$14K
May 26, 2021Cheng Jennifer YDirectorOption exercise(M)10K$0
May 26, 2021Cheng Jennifer YDirectorOption exercise(M)10K$0
May 26, 2021Socolof StephenDirectorOption exercise(M)10K$0
May 26, 2021Socolof StephenDirectorOption exercise(M)10K$0

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-03-292026-07-14. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).