MARTIN WILLIAM C

High conviction

Director, Chief Strategy Officer · IMMERSION CORP

Every open-market stock purchase MARTIN WILLIAM C has reported to the SEC on Form 4 that met our signal bar, parsed straight from the filings. Insiders sell for many reasons, but they buy with their own money for one — this page tracks where those buys landed inside insider clusters and how the prices paid compare to where the stock trades now.

Total bought
$1.2M
Open-market buys
5
Companies
2
Last buy
Mar 20, 2025

Where the buys stand today

  • BNED
    Barnes & Noble Education, Inc.

    3 purchases totalling $835.6K at an average of $7.08 per share. See all insider buying in BNED

    Avg price paid
    $7.08
    Latest price
    Market cap
    $452.7M
  • IMMR
    IMMERSION CORP
    −13.4% vs price paid

    2 purchases totalling $337.1K at an average of $8.00 per share; the stock last traded at $6.93. See all insider buying in IMMR

    Avg price paid
    $8.00
    Latest price
    $6.93
    Market cap
    $229.4M

Cluster participation

Buys that landed within days of other insiders buying the same stock — the pattern this site exists to catch.

All reported buys

DateTickerSharesPriceValueFiling
Mar 20, 2025
IMMRcluster
27,150$7.55$205.0KSEC ↗
Aug 27, 2024
IMMRcluster
15,000$8.81$132.2KSEC ↗
Jul 10, 2024
BNEDcluster
38,000$7.19$273.2KSEC ↗
Jul 9, 2024
BNEDcluster
20,000$7.18$143.6KSEC ↗
Jul 8, 2024
BNEDcluster
60,000$6.98$418.8KSEC ↗

Get alerted the next time MARTIN WILLIAM C — or any insider — buys

We watch every Form 4 as it hits SEC EDGAR and alert you when insiders cluster into the same stock.

About this data

Figures are parsed from MARTIN WILLIAM C's Form 4 filings on SEC EDGAR (CIK 1205885) and cover open-market purchases (transaction code P) — grants, option exercises, and sales are excluded, which is why totals here can differ from raw filing counts. Every row links to its source document.

This page is informational and reflects public filing data. It is not investment advice.