Centurion Acquisition Corp: a group of LMR Partners entities and two individuals filed an amended Schedule 13G/A reporting collective beneficial ownership of 1,375,000 Class A Ordinary Shares as of March 31, 2026. Those shares are held directly by LMR Multi-Strategy Master Fund Limited and LMR CCSA Master Fund Ltd (each 687,500 shares), representing 4.8% of the outstanding Class A Ordinary Shares based on 28,750,000 shares outstanding as of March 12, 2026. The filing also discloses warrants to purchase 468,750 Class A Ordinary Shares exercisable at $11.50 per share under the stated terms. Voting and disposition powers are reported as shared among the reporting persons.
Positive
None.
Negative
None.
Insights
LMR reports a passive, shared 4.8% stake and related warrants.
The filing lists an aggregate beneficial ownership of 1,375,000 Class A Ordinary Shares held directly by two master funds, with shared voting and dispositive powers reported for the named LMR entities and two individuals. The stake equals 4.8% of the issuer on the cited outstanding share base.
Warrants for 468,750 shares at an exercise price of $11.50 are disclosed, exercisable per the stated post-business-combination schedule. Subsequent filings would show whether and when those warrants convert into equity and any change in ownership or voting power.
Key Figures
Aggregate shares owned:1,375,000 sharesPer-fund holdings:687,500 sharesPercent of class:4.8%+3 more
6 metrics
Aggregate shares owned1,375,000 sharesBeneficial ownership as of March 31, 2026
Per-fund holdings687,500 sharesHeld by each of LMR Master Fund and LMR CCSA Master Fund
Percent of class4.8%Based on 28,750,000 Class A shares outstanding as of March 12, 2026
Warrants outstanding468,750 warrantsAggregate warrants held by each master fund, exercisable post-business-combination
Warrant exercise price$11.50/shareExercise price for the disclosed warrants
Shares outstanding reference28,750,000 sharesOutstanding Class A Ordinary Shares as of March 12, 2026
"each of LMR Master Fund and LMR CCSA Master Fund also directly holds warrants to purchase 468,750 Class A Ordinary Shares"
Warrants are special documents that give you the right to buy a company's stock at a set price before a certain date. They are often used as a way for companies to attract investors or raise money, and their value can increase if the company's stock price goes up.
Beneficial ownershipregulatory
"Amount beneficially owned: The information required by Items 4(a) - (c) is set forth"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
Shared powerregulatory
"each of the Reporting Persons had shared power to vote or direct the vote of 1,375,000 Class A Ordinary Shares"
Schedule 13G/Aregulatory
"This statement is filed by: ... (collectively, the "LMR Investment Managers")"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
Centurion Acquisition Corp
(Name of Issuer)
Class A Ordinary Shares, par value $0.0001 per share
(Title of Class of Securities)
G20315100
(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):
G20315100
1
Names of Reporting Persons
LMR Partners LLP
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 KINGDOM
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,375,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,375,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,375,000.00
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)
4.8 %
12
Type of Reporting Person (See Instructions)
IA, PN
SCHEDULE 13G
CUSIP Number(s):
G20315100
1
Names of Reporting Persons
LMR PARTNERS Ltd
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
HONG KONG
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,375,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,375,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,375,000.00
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)
4.8 %
12
Type of Reporting Person (See Instructions)
CO, IA
SCHEDULE 13G
CUSIP Number(s):
G20315100
1
Names of Reporting Persons
LMR Partners LLC
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
1,375,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,375,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,375,000.00
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)
4.8 %
12
Type of Reporting Person (See Instructions)
IA, OO
SCHEDULE 13G
CUSIP Number(s):
G20315100
1
Names of Reporting Persons
LMR Partners AG
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
SWITZERLAND
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,375,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,375,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,375,000.00
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)
4.8 %
12
Type of Reporting Person (See Instructions)
CO, IA
SCHEDULE 13G
CUSIP Number(s):
G20315100
1
Names of Reporting Persons
LMR PARTNERS (DIFC) Ltd
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 ARAB EMIRATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,375,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,375,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,375,000.00
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)
4.8 %
12
Type of Reporting Person (See Instructions)
CO, IA
SCHEDULE 13G
CUSIP Number(s):
G20315100
1
Names of Reporting Persons
LMR Partners (Ireland) Limited
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
IRELAND
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,375,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,375,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,375,000.00
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)
4.8 %
12
Type of Reporting Person (See Instructions)
CO, IA
SCHEDULE 13G
CUSIP Number(s):
G20315100
1
Names of Reporting Persons
Ben Levine
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 KINGDOM
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,375,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,375,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,375,000.00
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)
4.8 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
CUSIP Number(s):
G20315100
1
Names of Reporting Persons
Stefan Renold
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
SWITZERLAND
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,375,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,375,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,375,000.00
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)
4.8 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Centurion Acquisition Corp
(b)
Address of issuer's principal executive offices:
667 Madison Avenue 5th Floor, New York, New York, 10065
Item 2.
(a)
Name of person filing:
This statement is filed by: (i) LMR Partners LLP, LMR Partners Limited, LMR Partners LLC, LMR Partners AG, LMR Partners (DIFC) Limited and LMR Partners (Ireland) Limited (collectively, the "LMR Investment Managers"), which serve as the investment managers to certain funds with respect to the shares of Class A Ordinary Shares, par value $0.0001 per share ("Class A Ordinary Shares"), held by certain funds; and (ii) Ben Levine and Stefan Renold, who are ultimately in control of the investment and voting decisions of the LMR Investment Managers with respect to the securities held by certain funds. The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons."
(b)
Address or principal business office or, if none, residence:
The address of the principal business office of each of the Reporting Persons is c/o LMR Partners LLP, 9th Floor, Devonshire House, 1 Mayfair Place, London, W1J 8AJ, United Kingdom.
(c)
Citizenship:
LMR Partners LLP is a United Kingdom limited liability partnership. LMR Partners Limited is a Hong Kong corporation. LMR Partners LLC is a Delaware limited liability company. LMR Partners AG is a Swiss corporation. LMR Partners (DIFC) Limited is a United Arab Emirates corporation. LMR Partners (Ireland) Limited is a limited company incorporated in Ireland. Ben Levine is a citizen of the United Kingdom. Stefan Renold is a citizen of Switzerland.
(d)
Title of class of securities:
Class A Ordinary Shares, par value $0.0001 per share
(e)
CUSIP No.:
G20315100
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).
Investment Adviser
Item 4.
Ownership
(a)
Amount beneficially owned:
The information required by Items 4(a) - (c) is set forth in Rows 5 - 11 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
As of March 31, 2026:
The Class A Ordinary Shares beneficially owned by the Reporting Persons are directly held by LMR Multi-Strategy Master Fund Limited ("LMR Master Fund") and LMR CCSA Master Fund Ltd ("LMR CCSA Master Fund"). Each of LMR Master Fund and LMR CCSA Master Fund directly holds 687,500 Class A Ordinary Shares, with a total of 1,375,000 Class A Ordinary Shares in the aggregate (the "LMR Shares").
In addition to the LMR Shares, each of LMR Master Fund and LMR CCSA Master Fund also directly holds warrants to purchase 468,750 Class A Ordinary Shares ("Warrants"). The Warrants have an exercise price of $11.50 per Class A Ordinary Share and are exercisable 30 days after the completion of the Issuer's initial business combination, and will expire five years after the completion of the Issuer's initial business combination or earlier upon redemption or the Issuer's liquidation.
(b)
Percent of class:
As of March 31, 2026:
The Class A Ordinary Shares held by each of LMR Master Fund and LMR CCSA Master Fund represent approximately 2.4% and the LMR Shares in the aggregate represent approximately 4.8% of the outstanding Class A Ordinary Shares, based on 28,750,000 Class A Ordinary Shares of the Issuer outstanding as of March 12, 2026, as reported in the Issuer's Form 10-K filed with the Securities and Exchange Commission on March 12, 2026.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
As of March 31, 2026, each of the Reporting Persons had sole power to vote or direct the vote of 0 Class A Ordinary Shares.
(ii) Shared power to vote or to direct the vote:
As of March 31, 2026, each of the Reporting Persons had shared power to vote or direct the vote of 1,375,000 Class A Ordinary Shares.
(iii) Sole power to dispose or to direct the disposition of:
As of March 31, 2026, each of the Reporting Persons had sole power to dispose or to direct the disposition of 0 Class A Ordinary Shares.
(iv) Shared power to dispose or to direct the disposition of:
As of March 31, 2026, each of the Reporting Persons had shared power to dispose or to direct the disposition of 1,375,000 Class A Ordinary Shares.
Item 5.
Ownership of 5 Percent or Less of a Class.
Ownership of 5 percent or less of a class
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
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:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
By signing below I certify that, to the best of my knowledge and belief, the foreign regulatory scheme applicable to LMR Partners LLP, LMR Partners Limited, LMR Partners AG, LMR Partners (DIFC) Limited and LMR Partners (Ireland) Limited is substantially comparable to the regulatory scheme applicable to the functionally equivalent U.S. institution(s). I also undertake to furnish to the Commission staff, upon request, information that would otherwise be disclosed in a Schedule 13D.
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.
What stake does LMR Partners report in Centurion Acquisition Corp (ALF)?
LMR reports beneficial ownership of 1,375,000 Class A Ordinary Shares, held by two master funds. This equals 4.8% of outstanding Class A Ordinary Shares based on 28,750,000 shares outstanding as of March 12, 2026. Voting/disposition powers are shared.
How are the 1,375,000 shares held and split between funds?
The shares are directly held by LMR Multi-Strategy Master Fund Limited and LMR CCSA Master Fund Ltd, each holding 687,500 Class A Ordinary Shares. The filing states these two funds together hold the aggregate 1,375,000 shares as of March 31, 2026.
Does the filing disclose any derivative exposure or warrants?
Yes. Each master fund directly holds warrants, with an aggregate of 468,750 Warrants to purchase Class A Ordinary Shares. The Warrants have an exercise price of $11.50 and follow the post-initial-business-combination exercisability and expiration terms stated in the filing.
What voting and disposition rights are reported by the reporting persons?
As of March 31, 2026, the reporting persons report 0 shares of sole voting or sole dispositive power and report 1,375,000 shares of shared voting power and shared dispositive power. The filing attributes shared powers across the listed LMR entities and individuals.
On what outstanding share base is the 4.8% ownership percentage calculated?
The filing cites 28,750,000 Class A Ordinary Shares outstanding as of March 12, 2026, drawn from the issuer's Form 10-K. The reported aggregate 1,375,000 shares correspond to approximately 4.8% of that outstanding amount.
