Capital Properties: Carl Oppenheimer reports 5.27% 13G stake

Capital Properties, Inc. (CPTP) received a Schedule 13G reporting beneficial ownership of its Class A Common Stock as of September 30, 2025.

Rhea-AI Filing Summary

Capital Properties, Inc. (CPTP) received a Schedule 13G reporting beneficial ownership of its Class A Common Stock as of September 30, 2025. The filing lists multiple reporting persons and their holdings.

• Carl K. Oppenheimer: 348,123 shares, 5.27% of the class; sole voting and dispositive power over 319,238 shares.
• Oppvest, LLC: 298,058 shares, 4.52%; sole voting and dispositive power.
• P. Oppenheimer Investment Partnership, LP: 292,967 shares, 4.44%; sole voting and dispositive power.
• Oppenheimer + Close, LLC: 50,065 shares, 0.76%; sole voting and dispositive power over 21,180 shares.
• Oppenheimer-Close Investment Partnership, LP: 5,091 shares, 0.08%; sole voting and dispositive power.

All reporting persons indicate 0 shared voting and shared dispositive power.

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Accepted by SEC EDGAR 11/14/2025 - 11:11 AM EST Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Capital Properties, Inc.

(Name of Issuer)

Class A Common Stock, $.01 par value

(Title of Class of Securities)

140430109

(CUSIP Number)

09/30/2025

(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)

SCHEDULE 13G

CUSIP No. 140430109

1

Names of Reporting Persons

P. Oppenheimer Investment Parternship, LP

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 292,967.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 292,967.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

292,967.00

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)

4.44 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No. 140430109

1

Names of Reporting Persons

Oppenheimer-Close Investment Partnership, LP

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 5,091.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 5,091.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

5,091.00

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)

0.08 %

12

Type of Reporting Person (See Instructions)

PN

SCHEDULE 13G

CUSIP No. 140430109

1

Names of Reporting Persons

Oppenheimer + Close, 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 21,180.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 21,180.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

50,065.00

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)

0.76 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP No. 140430109

1

Names of Reporting Persons

Oppvest, 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 298,058.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 298,058.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

298,058.00

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)

4.52 %

12

Type of Reporting Person (See Instructions)

OO, IA

SCHEDULE 13G

CUSIP No. 140430109

1

Names of Reporting Persons

Carl K. Oppenheimer

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 319,238.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 319,238.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

348,123.00

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)

5.27 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Capital Properties, Inc.
(b)	Address of issuer's principal executive offices: 5 Steeple Street, Unit 303, Providence, RHODE ISLAND 02903
Item 2.
(a)	Name of person filing: P. Oppenheimer Investment Partnership, LP Oppenheimer-Close Investment Partnership, LP Oppenheimer + Close, LLC Oppvest, LLC Carl K. Oppenheimer
(b)	Address or principal business office or, if none, residence: 119 West 57th Street Suite 1515 New York, NY 10019
(c)	Citizenship: Delaware Delaware Delaware Delaware USA
(d)	Title of class of securities: Class A Common Stock, $.01 par value
(e)	CUSIP No.: 140430109
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: 292,967 5,091 50,065 298,058 348,123
(b)	Percent of class: 4.4% 0.1% 0.8% 4.5% 5.3
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 292,967 5,091 21,180 298,058 319,238
	(ii) Shared power to vote or to direct the vote: 0 0 0 0 0
	(iii) Sole power to dispose or to direct the disposition of: 292,967 5,091 21,180 298,058 319,238
	(iv) Shared power to dispose or to direct the disposition of: 0 0 0 0 0
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
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.

P. Oppenheimer Investment Parternship, LP

Signature:	Carl K. Oppenheimer
Name/Title:	Managing Member
Date:	11/14/2025

Oppenheimer-Close Investment Partnership, LP

Signature:	Carl K. Oppenheimer
Name/Title:	Managing Member
Date:	11/14/2025

Oppenheimer + Close, LLC

Signature:	Carl K. Oppenheimer
Name/Title:	Managing Member
Date:	11/14/2025

Oppvest, LLC

Signature:	Carl K. Oppenheimer
Name/Title:	Managing Member
Date:	11/14/2025

Carl K. Oppenheimer

Signature:	Carl K. Oppenheimer
Name/Title:	Managing Member
Date:	11/14/2025