SC Filed 2020-09-03 Event — SEC 0001013594-20-000681 →

Nierenberg Investment Management Company, Inc. → FLOTEK INDUSTRIES INC/CN/ FTK

Stake: — Shares: —

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 21/100 · Filer 90d Win Rate: 0% · Hist. 90d Edge: +0.0%

Passive Schedule 13G filer baseline
Elevated short days-to-cover (9.1 DTC)
Short interest building (+11.1% vs prior settlement)

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)

2 transactions

1 buys · 1 sales · 0 awards/exercises

Issuer Cluster

11 13D/G filings on this issuer

10 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 9.12

4,248,686 shares short · +11.1% vs prior

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-09-11	Wilks Matthew	director	Buy	1,319,493	$26.01	$34.32M
2026-09-11	ProFrac GDM, LLC	10%+ owner	Sale	2,306,806	$26.01	$60.00M

Other 13D/G Filings on FLOTEK INDUSTRIES INC/CN/

Filed	Form	Filer	Stake	Shares
2026-09-15	SCHEDULE 13D/A	ProFrac Holding Corp.	—	20,937,915	view →
2025-04-30	SCHEDULE	ProFrac Holding Corp.	53.90%	17,244,721	view →
2023-07-14	SC	ProFrac Holding Corp.	—	—	view →
2023-03-02	SC	ProFrac Holding Corp.	—	—	view →
2022-03-07	SC	ProFrac Holdings, LLC	—	—	view →
2022-02-07	SC	North Sound Trading, LP	—	—	view →
2022-02-04	SC	Nierenberg Investment Management Company, Inc.	—	—	view →
2020-12-03	SC	North Sound Trading, LP	—	—	view →
2020-09-24	SC	North Sound Trading, LP	—	—	view →
2019-06-06	SC	North Sound Trading, LP	—	—	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 →
2020-08-26	SC	GEOSPACE TECHNOLOGIES CORP GEOS	—	—	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 →

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