// company-profile
Geospace Technologies Corp
GEOSExchangeNasdaqSectorMeasuring & Controlling Devices, NECInc.TXFilings37Insiders11
// api This Geospace Technologies Corp insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
No insider activity recorded for GEOS in the last 90 days.
Institutional Ownership
Top 13F-HR holders of Geospace Technologies Corp as of 2026-03-31
Total reported AUM
$70.1M
QoQ change
-32.0%
Reporting period
2026-03-31
#1
DISCIPLINED GROWTH INVESTORS INC /MN
CIK 1050442
$13.4M
1.1M shares
#2
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$7.0M
577K shares
#3
GRACE & WHITE INC /NY
CIK 903064
$5.8M
473K shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Feb 9, 2026 | Miles Richard F | GEOS | Award | 3,500 | $0.00 | $0K |
| Feb 9, 2026 | Giesinger Edgar R. JR. | GEOS | Award | 3,500 | $0.00 | $0K |
| Feb 9, 2026 | DAVIS THOMAS L | GEOS | Award | 3,500 | $0.00 | $0K |
| Dec 5, 2025 | Kelley Richard James | GEOS | Tax Withholding | 275 | $0.00 | $0K |
| Dec 5, 2025 | Curda Robert L. | GEOS | Tax Withholding | 165 | $0.00 | $0K |
38 more transactions hidden
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