UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): August 15, 2025

Argo Group International Holdings, Inc.

(Exact Name of Registrant as Specified in Charter)

Delaware	001-15259	98-0214719
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

501 7th Avenue

7th Floor

New York, New York 10018

(Address, Including Zip Code,

of Principal Executive Offices)

Registrant’s telephone number, including area code: (210) 321-8400

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐	Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communication pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communication pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
6.500% Senior Notes due 2042 issued by Argo Group US, Inc. and The Guarantee With Respects Thereto	ARGD	New York Stock Exchange
Depositary Shares, Each Representing a 1/1000th Interest in 7.00% Resettable Fixed Rate Preferred Stock, Series A, Par Value $1.00 Per Share	ARGO/PA	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01.

Other Events.

On August 15, 2025, Argo Group International Holdings, Inc. (formerly known as Argo Group International Holdings, Ltd.) issued a press release announcing the full redemption on September 15, 2025 of (i) all 6,000 outstanding shares of its 7.00% Resettable Fixed Rate Preferred Stock, Series A (the “Series A Preferred Stock”), and the corresponding 6,000,000 depositary shares, each representing a 1/1,000th interest in one share of Series A Preferred Stock (the “Depositary Shares”), (ii) the full redemption on September 15, 2025 of all $143,750,000 outstanding aggregate principal amount of Argo Group US, Inc.’s 6.500% Senior Notes due 2042 (the “Notes”), and (iii) its intent to delist and deregister the Depositary Shares and the Notes. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by reference.

Item 9.01.

Financial Statements and Exhibits.

(d)

Exhibits:

No.		Exhibit
99.1		Press Release, dated August 15, 2025.
104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: August 15, 2025	ARGO GROUP INTERNATIONAL HOLDINGS, INC.

	By:	/s/ Michael Tiliakos
		Name:	Michael Tiliakos
		Title:	General Counsel and Secretary

Argo Group International Holdings, Inc. 8-K