What is CUSIP 65441V101?

CUSIP 65441V101 is the security identifier used in SEC filing datasets for NINEQ - Nine Energy Service, Inc. - Common Stock, par value $0.01 per share.

Security Snapshot

Nine Energy Service, Inc. - Common Stock, par value $0.01 per share (NINEQ) Institutional Ownership

Q: Who owns NINEQ - Nine Energy Service, Inc. - Common Stock, par value $0.01 per share based on 13F filings?

Open this security page to review the newest available 13F ownership history, top reported holders, and period-by-period changes.

CUSIP: 65441V101

13F Institutional Holders and Ownership History from Q1 2018 to Q1 2026

13F reference period

n/a

Institutions Reporting

Shares (Excl. Options)

Price

$0.01

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.

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Security type / class: Equity / Common Stock, par value $0.01 per share
Symbol: NINEQ
Shares outstanding: 13,951,120
SEC-reported price per share: $0.01
Insider filing price: $0.01

13F Shares, Excluding Options vs Price

13F Value, Excluding Options

Total Investors

Filing notes and source

Key facts

NINEQ - Nine Energy Service, Inc. - Common Stock, par value $0.01 per share is tracked under CUSIP 65441V101.
13F reference-period holder data is not available.
2 significant owners is listed from Schedule 13D/13G reporting.

Change

Holder data for the Q2 2026 reference period is not available.
Available periods remain in the history table; they do not substitute for the headline period.

Research use

You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Schedule 13D/G

Ownership context comes from Schedule 13D/G and available holder history for this CUSIP.

Open SEC evidence

Security key

65441V101

13F reference period

n/a

13F holders

13D/G owners

CIK / CUSIP context first

NINEQ full holder history

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

Recent Quarterly Holder Reports

Open recent reporting periods for CUSIP 65441V101:

Q1 2026 (0 holders) Q4 2025 (29 holders) Q3 2025 (42 holders) Q2 2025 (51 holders) Q1 2025 (61 holders) Q4 2024 (62 holders) Q3 2024 (51 holders) Q2 2024 (52 holders) Q1 2024 (54 holders) Q4 2023 (60 holders)

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows

Security

NINEQ

Filer	Ownership	Change %	Holdings Value	Net Change	Nb Shares	Change %	Reporting Name	Report Period
MONROE WILLIAM	12%		$4,036,290		4,863,000		William Monroe	31 Dec 2024
CastleKnight Master Fund LP	8.3%		$11,579		1,157,943		CastleKnight Master Fund LP	31 Mar 2026

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods

Headline period

n/a

Rows shown

1-25 of 33

Period	13F Shares, Excl. Options	Value, Excl. Options	Value Change	Puts Notional Value	Calls Notional Value	Price (Median)	Investors
2026 Q1	0	$0	-$793,653	$0	$0	$0.01	0
2025 Q4	3,446,798	$1,195,247	-$4,139,568	$6,914	$17,320	$0.35	29
2025 Q3	9,761,898	$6,165,840	-$710,790	$6,445	$52,034	$0.63	42
2025 Q2	10,754,678	$8,273,555	-$1,601,162	$238,579	$66,078	$0.77	51
2025 Q1	12,419,659	$13,991,498	-$2,936,716	$55,935	$47,512	$1.13	61
2024 Q4	15,049,382	$16,854,872	-$5,281,048	$10,864	$64,890	$1.12	62
2024 Q3	19,750,378	$24,900,194	-$815,612	$8,814	$63,146	$1.13	51
2024 Q2	20,393,734	$34,262,611	+$607,145	$90,216	$58,632	$1.68	52
2024 Q1	19,883,808	$44,534,223	-$1,218,597	$13,440	$133,952	$2.24	54
2023 Q4	20,348,224	$54,535,154	+$2,733,904	$131,856	$252,992	$2.68	60
2023 Q3	19,216,630	$79,241,852	-$4,107,300	$287,164	$705,756	$4.12	59
2023 Q2	20,349,276	$77,937,497	+$2,742,334	$311,697	$731,849	$3.83	66
2023 Q1	19,157,648	$106,517,473	-$46,352,317	$917,124	$1,811,204	$5.56	71
2022 Q4	20,044,204	$291,221,203	+$48,312,097	$7,362,785	$10,287,443	$14.53	75
2022 Q3	17,477,290	$46,138,256	+$4,786,354	$76,000	$260,000	$2.64	46
2022 Q2	15,659,483	$41,496,257	+$858,936	$172,000	$506,000	$2.65	44
2022 Q1	15,230,786	$56,955,363	-$7,840,537	$521,000	$1,303,000	$3.74	36
2021 Q4	18,032,067	$18,033,097	-$1,247,217	$11,000	$46,000	$1.00	32
2021 Q3	19,080,530	$34,919,184	-$2,130,642	$0	$269,000	$1.83	32
2021 Q2	20,187,177	$59,347,285	+$320,924	$50,000	$1,105,000	$2.94	31
2021 Q1	20,105,893	$46,243,223	-$787,226	$45,000	$764,000	$2.30	36
2020 Q4	20,434,267	$55,582,267	+$94,792		$191,000	$2.72	37
2020 Q3	15,896,284	$17,965,384	-$2,721,976			$1.13	31
2020 Q2	17,245,027	$33,653,566	-$5,621,392			$1.95	44
2020 Q1	20,623,123	$16,666,315	-$17,781,439			$0.81	44