Insider filing report for Changes in Beneficial Ownership
- Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
- Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
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- Peter Lynch
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13G
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UNDER THE SECURITIES EXCHANGE ACT OF 1934
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Cartesian Therapeutics, Inc. (Name of Issuer) |
Common Stock (Title of Class of Securities) |
816212302 (CUSIP Number) |
03/09/2026 (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)
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 Rule 13d-1(c)
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| Rule 13d-1(d)
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SCHEDULE 13G
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| CUSIP No. | 816212302 |
| 1 | Names of Reporting Persons
Squarepoint Ops 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: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
2,209,601.00 | ||||||||
| 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)
8.3 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
IA |
SCHEDULE 13G
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| CUSIP No. | 816212302 |
| 1 | Names of Reporting Persons
Squarepoint Capital 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
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| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
2,209,601.00 | ||||||||
| 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)
8.3 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
IA |
SCHEDULE 13G
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| CUSIP No. | 816212302 |
| 1 | Names of Reporting Persons
Squarepoint Operations Private 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
SINGAPORE
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| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
2,209,601.00 | ||||||||
| 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)
8.3 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
IA |
SCHEDULE 13G
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| CUSIP No. | 816212302 |
| 1 | Names of Reporting Persons
Squarepoint (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: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
2,209,601.00 | ||||||||
| 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)
8.3 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
IA |
SCHEDULE 13G
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| CUSIP No. | 816212302 |
| 1 | Names of Reporting Persons
Squarepoint Master Fund 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
CAYMAN ISLANDS
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
2,178,652.00 | ||||||||
| 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)
8.2 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
OO |
SCHEDULE 13G
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| CUSIP No. | 816212302 |
| 1 | Names of Reporting Persons
Squarepoint Core Master Fund 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
CAYMAN ISLANDS
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 9 | Aggregate Amount Beneficially Owned by Each Reporting Person
30,949.00 | ||||||||
| 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)
0.1 % | ||||||||
| 12 | Type of Reporting Person (See Instructions)
OO |
SCHEDULE 13G
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| Item 1. | ||
| (a) | Name of issuer:
Cartesian Therapeutics, Inc. | |
| (b) | Address of issuer's principal executive offices:
7495 NEW HORIZON WAY, FREDERICK, MARYLAND, 21703. | |
| Item 2. | ||
| (a) | Name of person filing:
Squarepoint Ops LLC Squarepoint Capital LLP Squarepoint Operations Private Limited Squarepoint (DIFC) Limited Squarepoint Master Fund Limited Squarepoint Core Master Fund Limited | |
| (b) | Address or principal business office or, if none, residence:
Squarepoint Ops LLC Squarepoint Master Fund Limited Squarepoint Core Master Fund Limited 250 W 55th Street 32nd Floor, New York, NY 10019 USA Squarepoint Capital LLP Citypoint, One Ropemaker Street, London, EC2Y 9AW UK Squarepoint Operations Private Limited 88 Market Street, CapitaSpring, Level 49, 048948 Singapore Squarepoint (DIFC) Limited Unit L29-07, Level 29, ICD Brookfield Place, Dubai International Financial Centre, Dubai, United Arab Emirates | |
| (c) | Citizenship:
Squarepoint Ops LLC- USA Squarepoint Capital LLP- United Kingdom Squarepoint Operations Private Limited- Singapore Squarepoint (DIFC) Limited- United Arab Emirates Squarepoint Master Fund Limited- Cayman Islands Squarepoint Core Master Fund Limited- Cayman Islands | |
| (d) | Title of class of securities:
Common Stock | |
| (e) | CUSIP No.:
816212302 | |
| 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);
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| (b) | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
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| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
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| (d) |
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
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| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
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| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
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| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
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| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
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| (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);
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| (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:
Squarepoint Ops LLC- 2,209,601 Squarepoint Capital LLP- 2,209,601 Squarepoint Operations Private Limited- 2,209,601 Squarepoint (DIFC) Limited- 2,209,601 Squarepoint Master Fund Limited- 2,178,652.00 Squarepoint Core Master Fund Limited- 30,949.00 | |
| (b) | Percent of class:
Squarepoint Ops LLC- 8.34% Squarepoint Capital LLP- 8.34% Squarepoint Operations Private Limited- 8.34% Squarepoint (DIFC) Limited- 8.34% Squarepoint Master Fund Limited- 8.22% Squarepoint Core Master Fund Limited- 0.12% %
| |
| (c) | Number of shares as to which the person has:
| |
| (i) Sole power to vote or to direct the vote:
0 | ||
| (ii) Shared power to vote or to direct the vote:
Squarepoint Ops LLC- 2,209,601 Squarepoint Capital LLP- 2,209,601 Squarepoint Operations Private Limited- 2,209,601 Squarepoint (DIFC) Limited- 2,209,601 Squarepoint Master Fund Limited- 2,178,652.00 Squarepoint Core Master Fund Limited- 30,949.00 | ||
| (iii) Sole power to dispose or to direct the disposition of:
0 | ||
| (iv) Shared power to dispose or to direct the disposition of:
Squarepoint Ops LLC- 2,209,601 Squarepoint Capital LLP- 2,209,601 Squarepoint Operations Private Limited- 2,209,601 Squarepoint (DIFC) Limited- 2,209,601 Squarepoint Master Fund Limited- 2,178,652.00 Squarepoint Core Master Fund Limited- 30,949.00 | ||
| Item 5. | 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
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| Item 9. | Notice of Dissolution of Group. | |
Not Applicable
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| Item 10. | Certifications: |
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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. |
| 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.
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