Nine Energy Service, Inc. reports that Adage Capital Management and affiliated reporting persons collectively beneficially own 1,355,149 shares of Common Stock, equal to 9.71% of the class. The percentage is calculated using 13,950,000 shares outstanding as of March 5, 2026.
The filing identifies Adage Capital Management, L.P., Robert Atchinson and Phillip Gross as reporting persons and discloses shared voting and dispositive power over the reported shares.
Positive
None.
Negative
None.
Insights
Adage holds a near-10% passive stake by Schedule 13G disclosure.
The filing shows 1,355,149 shares representing 9.71% of the company's common stock based on March 5, 2026 outstanding figures. This is a sizable passive holding that must be reported under beneficial ownership rules.
Caveats include the filing type: a Schedule 13G typically indicates passive intent. Future disclosures or amendments would reveal any change in intent or active engagement.
Shared voting and dispositive power is disclosed through affiliated entities and individuals.
The statement attributes shared voting and shared dispositive power of 1,355,149 shares to Adage and names Robert Atchinson and Phillip Gross as related reporting persons with the same share count. The cover-page rows state the specific power allocations.
Signatures are dated July 9, 2026; any change in holdings or power would appear in subsequent filings.
Key Figures
Shares beneficially owned:1,355,149 sharesPercent of class:9.71%Shares outstanding (base):13,950,000 shares
3 metrics
Shares beneficially owned1,355,149 sharesAmount reported on cover page for reporting persons
Percent of class9.71%Calculated using 13,950,000 shares outstanding as of March 5, 2026
Shares outstanding (base)13,950,000 sharesOutstanding shares used to calculate percentage as of March 5, 2026
Key Terms
Schedule 13G, Beneficially owned, Shared Dispositive Power
3 terms
Schedule 13Gregulatory
"The form type shown and used to report passive beneficial ownership"
A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.
Beneficially ownedfinancial
"Item 4(a) references the amount beneficially owned on the cover page"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
Shared Dispositive Powerregulatory
"Cover page rows list Shared Dispositive Power as 1,355,149.00"
Adage reports beneficial ownership of 1,355,149 shares. The Schedule 13G cover page and Item 4 state the amount as the reporting persons' beneficial ownership.
What percentage of Nine Energy (NINE) does this holding represent?
The filing states the holding represents 9.71% of the class. That percentage is calculated using 13,950,000 shares outstanding as of March 5, 2026 per the filing.
Who are the named reporting persons in the filing for NINE?
The filing names Adage Capital Management, L.P., and individuals Robert Atchinson and Phillip Gross as reporting persons, each tied to the same share count and disclosed powers.
Does the Schedule 13G indicate active or passive intent by Adage for NINE?
The filing is a Schedule 13G, which is generally used to report passive ownership. The document does not state active intent; it reports beneficial ownership and voting/dispositive power.
What outstanding share count is the 9.71% based on?
The percentage is based on an aggregate of 13,950,000 shares outstanding as of March 5, 2026, as cited in the filing's Item 4 and referenced Form 8-K.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Nine Energy Service, Inc.
(Name of Issuer)
Common Stock, par value $0.01 per share
(Title of Class of Securities)
65441V200
(CUSIP Number)
03/31/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
65441V200
1
Names of Reporting Persons
Adage Capital Management, L.P.
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,355,149.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,355,149.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,355,149.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.71 %
12
Type of Reporting Person (See Instructions)
IA, PN
SCHEDULE 13G
CUSIP Number(s):
65441V200
1
Names of Reporting Persons
Robert Atchinson
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,355,149.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,355,149.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,355,149.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.71 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
CUSIP Number(s):
65441V200
1
Names of Reporting Persons
Phillip Gross
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,355,149.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,355,149.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,355,149.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.71 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Nine Energy Service, Inc.
(b)
Address of issuer's principal executive offices:
2001 Kirby Drive, Suite 200, Houston, Texas 77019
Item 2.
(a)
Name of person filing:
This statement is filed by:
(i) Adage Capital Management, L.P., a Delaware limited partnership ("ACM"), as the investment manager of Adage Capital Partners, L.P., a Delaware limited partnership ("ACP"), with respect to the shares of common stock, par value $0.01 per share ("Common Stock") of Nine Energy Service, Inc., a Delaware corporation (the "Company"), directly held by ACP;
(ii) Robert Atchinson ("Mr. Atchinson"), as (1) managing member of Adage Capital Advisors, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACA"), managing member of Adage Capital Partners GP, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACPGP"), general partner of ACP and (2) managing member of Adage Capital Partners, L.L.C., a Delaware limited liability company ("ACPLLC"), general partner of ACM, with respect to the shares of Common Stock directly held by ACP; and
(iii) Phillip Gross ("Mr. Gross"), as (1) managing member of ACA, managing member of ACPGP and (2) managing member of ACPLLC, general partner of ACM, with respect to the shares of Common Stock directly held by ACP.
The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons." Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party.
The filing of this statement should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of the securities reported herein.
(b)
Address or principal business office or, if none, residence:
The address of the business office of each of the Reporting Persons is 200 Clarendon Street, 52nd Floor, Boston, Massachusetts 02116.
(c)
Citizenship:
ACM is a limited partnership organized under the laws of the State of Delaware. Messrs. Gross and Atchinson are citizens of the United States.
(d)
Title of class of securities:
Common Stock, par value $0.01 per share
(e)
CUSIP Number(s):
65441V200
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
The information required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 13,950,000 shares of Common Stock outstanding as of March 5, 2026, as reported in the Company's Current Report on Form 8-K, filed with the Securities and Exchange Commission on March 10, 2026.
(b)
Percent of class:
9.71%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(ii) Shared power to vote or to direct the vote:
The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iii) Sole power to dispose or to direct the disposition of:
The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iv) Shared power to dispose or to direct the disposition of:
The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
See Item 2(a).
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
Not Applicable
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Adage Capital Management, L.P.
Signature:
/s/ Robert Atchinson
Name/Title:
By: Adage Capital Partners, L.L.C., its General Partner, By: Robert Atchinson, its Managing Member
