AGREEMENT CONCERNING JOINT FILING OF SCHEDULE 13D

EXHIBIT 99.23

CUSIP No. ▇▇▇▇▇▇▇▇▇

AGREEMENT CONCERNING JOINT FILING

OF SCHEDULE 13D

The undersigned agree as follows:

(i) each of them is individually eligible to use the Schedule 13D/A to which this Exhibit is attached, and such Schedule 13D/A is filed on behalf of each of them; and

(ii) each of them is responsible for the timely filing of such Schedule 13D/A and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other person making the filing, unless such person knows or has reason to believe that such information is inaccurate.

This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all of which, taken together, shall constitute one and the same instrument.

Dated: September 30, 2025

	V. ▇▇▇▇ ▇▇▇▇▇
	/s/ V. ▇▇▇▇ ▇▇▇▇▇
	THE SECOND 810 HOLDCO LTD.
	By:	/s/ V. ▇▇▇▇ ▇▇▇▇▇
		Name:	V. ▇▇▇▇ ▇▇▇▇▇
		Title:	Director
	THE SECOND 1109 HOLDCO LTD.
	By:	/s/ V. ▇▇▇▇ ▇▇▇▇▇
		Name:	V. ▇▇▇▇ ▇▇▇▇▇
		Title:	President
	THE SIXTY TWO INVESTMENT COMPANY LIMITED
	By:	/s/ V. ▇▇▇▇ ▇▇▇▇▇
		Name:	V. ▇▇▇▇ ▇▇▇▇▇
		Title:	President
	12002574 CANADA INC.
	By:	/s/ V. ▇▇▇▇ ▇▇▇▇▇
		Name:	V. ▇▇▇▇ ▇▇▇▇▇
		Title:	President
	FFHL GROUP LTD.
	By:	/s/ V. ▇▇▇▇ ▇▇▇▇▇
		Name:	V. ▇▇▇▇ ▇▇▇▇▇
		Title:	President

	FAIRFAX FINANCIAL HOLDINGS LIMITED
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	President and Chief Operating Officer
	FAIRFAX (US) INC.
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	ODYSSEY GROUP HOLDINGS, INC.
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	ODYSSEY REINSURANCE COMPANY
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact

	▇▇▇▇ & ▇▇▇▇▇▇▇ HOLDINGS CORP.
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	UNITED STATES FIRE INSURANCE COMPANY
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	TIG INSURANCE COMPANY
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	NORTHBRIDGE FINANCIAL CORPORATION
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	FEDERATED INSURANCE COMPANY OF CANADA
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	NORTHBRIDGE GENERAL INSURANCE CORPORATION
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact

	VERASSURE INSURANCE COMPANY
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact

	ZENITH INSURANCE COMPANY
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact

	1102952 B.C. UNLIMITED LIABILITY COMPANY
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	ALLIED WORLD ASSURANCE COMPANY HOLDINGS, LTD
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	ALLIED WORLD ASSURANCE COMPANY HOLDINGS I, LTD
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	ALLIED WORLD ASSURANCE COMPANY, LTD
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	ALLIED WORLD ASSURANCE HOLDINGS (IRELAND) LTD
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact

	ALLIED WORLD ASSURANCE HOLDINGS (U.S.) INC
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	ALLIED WORLD INSURANCE COMPANY
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact

	AW UNDERWRITERS INC.
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	ALLIED WORLD SPECIALTY INSURANCE COMPANY
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	NEWLINE HOLDINGS UK LIMITED
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact
	NEWLINE CORPORATE NAME LIMITED
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact

	NEWLINE INSURANCE COMPANY LIMITED
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇
		Title:	Attorney-in-Fact

	FAIRFAX UK HOLDINGS LIMITED
	By:	/s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇
		Name:	▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇
		Title:	Director

	BRIT GROUP HOLDINGS LIMITED
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
		Title:	Group Chief Financial Officer
	BRIT INSURANCE HOLDINGS LIMITED
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
		Title:	Group Chief Financial Officer
	BRIT UW LIMITED
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
		Title:	Group Chief Financial Officer
	BRIT REINSURANCE (BERMUDA) LIMITED
	By:	/s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
		Name:	▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇
		Title:	Group Chief Financial Officer