SC Filed 2020-08-26 Event — SEC 0001013594-20-000664 →

Nierenberg Investment Management Company, Inc. → GEOSPACE TECHNOLOGIES CORP GEOS

Stake: — Shares: —

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 11/100 · Filer 90d Win Rate: 0% · Hist. 90d Edge: +0.0%

Passive Schedule 13G filer baseline
Moderate short days-to-cover (3.2 DTC)

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)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

4 13D/G filings on this issuer

3 other filings besides this one

Filer Track Record

10 filings by this filer

9 other filings in the data moat

Short Interest · settle 2026-10-15

DTC 3.22

318,326 shares short · -20.4% vs prior

Other 13D/G Filings on GEOSPACE TECHNOLOGIES CORP

Filed	Form	Filer	Stake	Shares
2026-10-07	SCHEDULE 13G	GRACE & WHITE INC /NY	—	—	view →
2019-02-08	SC	Nierenberg Investment Management Company, Inc.	—	—	view →
2018-05-15	SC	Lemelson Capital Management LLC	—	—	view →

Other Filings by Nierenberg Investment Management Company, Inc.

Filed	Form	Issuer	Stake	Shares
2025-03-17	SCHEDULE	POTBELLY CORP	10.30%	3,087,302	view →
2025-03-06	SCHEDULE	RIVERVIEW BANCORP INC RVSB	7.70%	1,625,065	view →
2022-02-04	SC	FLOTEK INDUSTRIES INC/CN/ FTK	—	—	view →
2021-11-22	SC	CRAWFORD & CO CRD-B	—	—	view →
2021-03-26	SC	Houston Wire & Cable CO	—	—	view →
2020-09-03	SC	FLOTEK INDUSTRIES INC/CN/ FTK	—	—	view →
2020-03-18	SC	Houston Wire & Cable CO	—	—	view →
2019-12-23	SC	Houston Wire & Cable CO	—	—	view →
2019-02-08	SC	GEOSPACE TECHNOLOGIES CORP GEOS	—	—	view →

Want this depth on every filing the moment it hits SEC EDGAR?

Free $0 (48h-delayed alerts) · Individual $49/mo (real-time) · Team & API $199/mo · Enterprise.

See pricing →