D. Boral ARC Acquisition I Corp. Schedule 13G/A shows Harraden-affiliated entities and Frederick V. Fortmiller, Jr. report beneficial ownership of 2,133,854 shares of Class A Common Stock, representing 7.31% of the class. The filing discloses shared voting and shared dispositive power over those shares and states related entity relationships and roles (general partner, investment manager, managing member).
The filing identifies the issuer CUSIP G2616F101, lists the issuer's executive office address, and is signed by Mr. Fortmiller on 05/14/2026.
Positive
None.
Negative
None.
Insights
Harraden group discloses a 7.31% beneficial stake with shared control.
The filing identifies 2,133,854 shares of Class A Common Stock as beneficially owned and specifies shared voting and dispositive authority among Harraden entities and Mr. Fortmiller. The relationships—general partner, manager, and managing member—explain how indirect ownership is reported.
Implications hinge on holder intentions and disposition choices; the filing documents ownership and control structure but does not state any planned transactions. Subsequent filings would disclose any changes in holdings or voting arrangements.
Key Figures
Shares beneficially owned:2,133,854 sharesPercent of class:7.31%CUSIP:G2616F101+1 more
4 metrics
Shares beneficially owned2,133,854 sharesClass A Common Stock
Percent of class7.31%Percent of Class A Common Stock
CUSIPG2616F101Issuer identification
Signature date05/14/2026Filing signature date
Key Terms
Schedule 13G/A, beneficially owned, shared dispositive power, shared voting power
4 terms
Schedule 13G/Aregulatory
"This Statement is filed on behalf of the following persons (collectively, the "Reporting Persons")"
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.
beneficially ownedfinancial
"Amount beneficially owned: 2,133,854"
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 powerfinancial
"Shared Dispositive Power 2,133,854.00"
shared voting powerfinancial
"Shared Voting Power 2,133,854.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
What stake does Harraden report in D. Boral ARC Acquisition I Corp. (BCAR)?
Harraden reports beneficial ownership of 2,133,854 shares (7.31%). The Schedule 13G/A attributes shared voting and shared dispositive power over these Class A shares to Harraden-affiliated funds and related entities.
Which Harraden entities are named in the 13G/A for BCAR?
The filing names Harraden Circle Investments, LLC; Harraden Circle Investors GP, LP; Harraden Circle Investors GP, LLC; Harraden Circle Investors, LP; and affiliated funds. Mr. Frederick V. Fortmiller, Jr. is identified as managing member of related entities.
Does the filing show sole voting or dispositive power for Harraden in BCAR?
No; the filing reports 0 shares with sole voting or sole dispositive power and 2,133,854 shares with shared voting and shared dispositive power, per Item 4 of the Schedule 13G/A.
When was the Schedule 13G/A for BCAR signed and who signed it?
The Schedule 13G/A is signed by Frederick V. Fortmiller, Jr. in his capacities as managing member and general partner representative, with signature dates shown as 05/14/2026.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
D. Boral ARC Acquisition I Corp.
(Name of Issuer)
Class A Common Stock
(Title of Class of Securities)
G2616F101
(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):
G2616F101
1
Names of Reporting Persons
Harraden Circle Investments, 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
2,133,854.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
2,133,854.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,133,854.00
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)
7.31 %
12
Type of Reporting Person (See Instructions)
OO, HC, IA
SCHEDULE 13G
CUSIP Number(s):
G2616F101
1
Names of Reporting Persons
Harraden Circle Investors GP, 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
0.00
6
Shared Voting Power
2,133,854.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
2,133,854.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,133,854.00
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)
7.31 %
12
Type of Reporting Person (See Instructions)
PN, HC
SCHEDULE 13G
CUSIP Number(s):
G2616F101
1
Names of Reporting Persons
Harraden Circle Investors GP, 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
2,133,854.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
2,133,854.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,133,854.00
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)
7.31 %
12
Type of Reporting Person (See Instructions)
OO, HC
SCHEDULE 13G
CUSIP Number(s):
G2616F101
1
Names of Reporting Persons
Harraden Circle Investors, 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
0.00
6
Shared Voting Power
1,319,566.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,319,566.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,319,566.00
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)
PN
SCHEDULE 13G
CUSIP Number(s):
G2616F101
1
Names of Reporting Persons
Harraden Circle Special Opportunities, 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
0.00
6
Shared Voting Power
444,406.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
444,406.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
444,406.00
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)
1.52 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
G2616F101
1
Names of Reporting Persons
Harraden Circle Strategic Investments, 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
0.00
6
Shared Voting Power
369,882.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
369,882.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
369,882.00
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)
1.27 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
G2616F101
1
Names of Reporting Persons
Harraden Circle Concentrated, 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
0.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
0.00
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 %
12
Type of Reporting Person (See Instructions)
PN
SCHEDULE 13G
CUSIP Number(s):
G2616F101
1
Names of Reporting Persons
Frederick V. Fortmiller, Jr.
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
2,133,854.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
2,133,854.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
2,133,854.00
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)
7.31 %
12
Type of Reporting Person (See Instructions)
IN, HC
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
D. Boral ARC Acquisition I Corp.
(b)
Address of issuer's principal executive offices:
10 East 53rd Street, Suite 3001, New York, NY, 10022
Item 2.
(a)
Name of person filing:
This Statement is filed on behalf of the following persons (collectively, the "Reporting Persons"):
i) Harraden Circle Investments, LLC ("Harraden Adviser");
ii) Harraden Circle Investors GP, LP ("Harraden GP");
iii) Harraden Circle Investors GP, LLC ("Harraden LLC");
iv) Harraden Circle Investors, LP ("Harraden Fund");
v) Harraden Circle Special Opportunities, LP ("Harraden Special Op Fund");
vi) Harraden Circle Strategic Investments, LP ("Harraden Strategic Fund");
vii) Harraden Circle Concentrated, LP ("Harraden Concentrated Fund"); and
viii) Frederick V. Fortmiller, Jr. ("Mr. Fortmiller")
This Statement relates to Shares (as defined herein) directly beneficially owned by Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, and Harraden Concentrated Fund. Harraden GP is the general partner to Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, and Harraden Concentrated Fund, and Harraden LLC is the general partner of Harraden GP. Harraden Adviser serves as investment manager to Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, Harraden Concentrated Fund, and other high net worth individuals. Mr. Fortmiller is the managing member of each of Harraden LLC and Harraden Adviser. In such capacities, each of Harraden GP, Harraden LLC, Harraden Adviser and Mr. Fortmiller may be deemed to indirectly beneficially own the Shares reported herein directly beneficially owned by Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, and Harraden Concentrated Fund.
(b)
Address or principal business office or, if none, residence:
885 Third Avenue, Suite 2600B, New York, NY 10022
(c)
Citizenship:
Each of Harraden Fund, Harraden Special Op Fund, Harraden Strategic Fund, Harraden Concentrated Fund, and Harraden GP is a Delaware limited partnership. Each of Harraden LLC and Harraden Adviser is a Delaware limited liability company. Mr. Fortmiller is a citizen of the United States of America.
(d)
Title of class of securities:
Class A Common Stock
(e)
CUSIP No.:
G2616F101
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:
2,133,854
(b)
Percent of class:
7.31 %
(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:
2,133,854
(iii) Sole power to dispose or to direct the disposition of:
0
(iv) Shared power to dispose or to direct the disposition of:
2,133,854
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.
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.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
See disclosure in Item 2 hereof.
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 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.
Harraden Circle Investments, LLC
Signature:
/s/ Frederick V. Fortmiller, Jr.
Name/Title:
Frederick V. Fortmiller, Jr., managing member
Date:
05/14/2026
Harraden Circle Investors GP, LP
Signature:
/s/ Frederick V. Fortmiller, Jr.
Name/Title:
Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner
Date:
05/14/2026
Harraden Circle Investors GP, LLC
Signature:
/s/ Frederick V. Fortmiller, Jr.
Name/Title:
Frederick V. Fortmiller, Jr., managing member
Date:
05/14/2026
Harraden Circle Investors, LP
Signature:
/s/ Frederick V. Fortmiller, Jr.
Name/Title:
Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner; Harraden Circle Investors GP, LP, general partner
Date:
05/14/2026
Harraden Circle Special Opportunities, LP
Signature:
/s/ Frederick V. Fortmiller, Jr.
Name/Title:
Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner; Harraden Circle Investors GP, LP, general partner
Date:
05/14/2026
Harraden Circle Strategic Investments, LP
Signature:
/s/ Frederick V. Fortmiller, Jr.
Name/Title:
Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner; Harraden Circle Investors GP, LP, general partner
Date:
05/14/2026
Harraden Circle Concentrated, LP
Signature:
/s/ Frederick V. Fortmiller, Jr.
Name/Title:
Frederick V. Fortmiller, Jr., managing member; Harraden Circle Investors GP, LLC, general partner; Harraden Circle Investors GP, LP, general partner
