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Who

William C. Martin

Chief Strategy Officer

Company insider

Files Form 4 as: Chief Strategy Officer, Immersion; Director and 10% owner, Barnes & Noble Education; 10% owner and Other, Universal Electronics; Director and 10% owner, Gulfmark Offshore; Director, Tidewater; 10% owner, Rentech; 10% owner, Mrv Communications; 10% owner, Intermolecular.

Every Form 4 they filed

In numbers

Trades disclosed
301
Buys
83
Sells
27
Bought
$37.8M
Sold
$23.4M
Companies
19
Companies where not an officer
18
First trade
3 Jan 2006
Last trade
7 Oct 2026
Last filed
8 Oct 2026

Companies traded

Where they are an officer
IMMR ImmersionDirector, Officer, 10% owner · Software · last 7 Oct 202627 buys · 7 sells
Everywhere else they filed: board seats, 10% stakes, other companies
BNED Barnes & Noble EducationDirector, 10% owner · Retail — Specialty · last 25 Sep 20263 buys · 0 sells
UEIC Universal Electronics10% owner, Other · Electrical Equipment & Grid · last 11 Sep 20262 buys · 3 sells
Gulfmark OffshoreDirector, 10% owner · last 15 Nov 20180 buys · 0 sells
TDW TidewaterDirector · Marine Shipping · last 15 Nov 20180 buys · 0 sells
Rentech10% owner · last 6 Dec 20174 buys · 6 sells
Mrv Communications10% owner · last 11 Aug 20174 buys · 0 sells
Intermolecular10% owner · last 17 Nov 20162 buys · 0 sells
Castle A M & Co10% owner · last 4 Nov 20166 buys · 1 sell
Standard Register Co10% owner · last 29 Jan 20150 buys · 4 sells
Vitesse SemiconductorDirector, 10% owner · last 30 Oct 20142 buys · 0 sells
Resource America10% owner · last 14 Feb 20131 buy · 1 sell
Thestreet10% owner · last 23 Jan 20139 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
201Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
7 Oct 2026filed 8 Oct 2026IMMR ImmersionSoftwareSEC FORM 4 Code A—17,217 at $0.00filing
25 Sep 2026filed 29 Sep 2026BNED Barnes & Noble EducationRetail — SpecialtySEC FORM 4 Code A—17,653 at $0.00filing
25 Sep 2026filed 29 Sep 2026BNED Barnes & Noble EducationRetail — SpecialtySEC FORM 4 Code A—17,653 at $0.00filing
11 Sep 2026filed 11 Sep 2026UEIC Universal ElectronicsElectrical Equipment & GridSEC FORM 4 Sold$489K105,541 at $4.63filing
10 Sep 2026filed 11 Sep 2026UEIC Universal ElectronicsElectrical Equipment & GridSEC FORM 4 Sold$114K24,459 at $4.66filing
10 Aug 2026filed 12 Aug 2026UEIC Universal ElectronicsElectrical Equipment & GridSEC FORM 4 Sold$1.0M200,000 at $5.22filing
31 Jul 2026filed 4 Aug 2026IMMR ImmersionSoftwareSEC FORM 4 Code A—5,640 at $0.00filing
31 Jul 2026filed 4 Aug 2026IMMR ImmersionSoftwareSEC FORM 4 Code A—5,640 at $0.00filing
7 Jul 2026filed 8 Jul 2026BNED Barnes & Noble Educationoption or derivative · Retail — SpecialtySEC FORM 4 Code S$3,0002,000 at $1.50filing
6 Jul 2026filed 8 Jul 2026BNED Barnes & Noble Educationoption or derivative · Retail — SpecialtySEC FORM 4 Code S$7,5005,000 at $1.50filing
6 Jul 2026filed 8 Jul 2026BNED Barnes & Noble Educationoption or derivative · Retail — SpecialtySEC FORM 4 Code S$23K12,000 at $1.88filing
30 Apr 2026filed 1 May 2026IMMR ImmersionSoftwareSEC FORM 4 Code A—7,425 at $0.00filing
30 Apr 2026filed 1 May 2026IMMR ImmersionSoftwareSEC FORM 4 Code A—17,872 at $0.00filing
30 Apr 2026filed 1 May 2026IMMR ImmersionSoftwareSEC FORM 4 Code A—7,425 at $0.00filing
30 Apr 2026filed 1 May 2026IMMR ImmersionSoftwareSEC FORM 4 Code A—17,872 at $0.00filing
11 Mar 2026filed 13 Mar 2026BNED Barnes & Noble EducationRetail — SpecialtySEC FORM 4 Code A—23,867 at $0.00filing
11 Mar 2026filed 13 Mar 2026BNED Barnes & Noble EducationRetail — SpecialtySEC FORM 4 Code A—23,867 at $0.00filing
30 Jan 2026filed 2 Feb 2026IMMR ImmersionSoftwareSEC FORM 4 Code A—6,588 at $0.00filing
30 Jan 2026filed 2 Feb 2026IMMR ImmersionSoftwareSEC FORM 4 Code A—6,588 at $0.00filing
14 Nov 2025filed 18 Nov 2025IMMR ImmersionSoftwareSEC FORM 4 Code A—17,647 at $0.00filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Technology34
Industrials5
Consumer Discretionary3
Not placed68

Buys in green, sells in red, by the company’s sector.

Related people

Eric SingerPresident and CEO · President and CEO at Immersion, filing Form 4 there in the last year
Elias NaderDirector · Director at Immersion, filing Form 4 there in the last year
Childress Frederick WaschDirector · Director at Immersion, filing Form 4 there in the last year
Emily HoffmanDirector · Director at Immersion, filing Form 4 there in the last year
J. Michael DodsonDirector · Chief Financial Officer at Immersion, filing Form 4 there in the last year
Gary LusterSVP, Chief Accounting Officer · Also traded BNED in the last 90 days
Jonathan SharCEO · Also traded BNED in the last 90 days
TORO 18 HOLDINGS LLCOther role · Also traded UEIC in the last 90 days