IAMGOLD (NYSE: IAG) appoints mining veteran Catherine McLeod-Seltzer to board

Rhea-AI Filing Summary

IAMGOLD Corporation announced that Catherine McLeod-Seltzer has been appointed to its board of directors, effective September 1, 2026. The chair of the board highlighted her executive, board and capital markets background and her history of building companies across the mining sector.

McLeod-Seltzer brings more than four decades of mining industry experience, including senior roles and directorships at several public companies and major transactions at Arequipa Resources, Lucara Diamond, Peru Copper and others. IAMGOLD is described as an intermediate gold producer and developer with operating mines at Côté Gold, Westwood and Essakane, including a 70|30 partnership at Côté Gold with Sumitomo Metal Mining, and a workforce of approximately 3,700 people.

Key Figures

Board appointment effective date: September 1, 2026 IAMGOLD workforce: 3,700 people Arequipa initial capitalization: under $5 million +3 more

6 metrics

Board appointment effective date September 1, 2026 Effective date of Catherine McLeod-Seltzer’s appointment to IAMGOLD’s board

IAMGOLD workforce 3,700 people Approximate number of people employed by IAMGOLD

Arequipa initial capitalization under $5 million Capitalization of Arequipa Resources Ltd. early in McLeod-Seltzer’s tenure

Arequipa value at acquisition more than $1.1 billion Value of Arequipa Resources Ltd. before its acquisition by Barrick Gold

Toromocho deposit sale $840 million Amount for which Peru Copper’s Toromocho deposit was acquired by Chinalco

Côté Gold partnership split 70|30 partnership Ownership split between IAMGOLD and Sumitomo Metal Mining at Côté Gold Mine

Key Terms

intermediate gold producer, Environmental, Social and Governance, Canadian Mining Hall of Fame, capital markets experience, +1 more

5 terms

intermediate gold producer financial

"IAMGOLD is an intermediate gold producer and developer based in Canada"

Environmental, Social and Governance regulatory

"committed to maintaining its culture of accountable mining through high standards of Environmental, Social and Governance practices"

Environmental, social and governance (ESG) describes how a company manages its impact on the planet, how it treats people and how it is governed. Investors treat ESG like a report card—companies that score well tend to face fewer regulatory, legal and reputational surprises, attract customers and employees more easily, and may deliver steadier long‑term returns, while poor ESG performance can signal added risk to investment value.

Canadian Mining Hall of Fame other

"In 2026, Ms. McLeod-Seltzer was inducted into the Canadian Mining Hall of Fame"

capital markets experience financial

"offering a combination of executive, board and capital markets experience"

exploration projects technical

"an established portfolio of early stage and advanced exploration projects within high potential mining districts"

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FAQ

What did IAMGOLD (IAG) announce regarding its board of directors?

IAMGOLD announced the appointment of Catherine McLeod-Seltzer to its board of directors, effective September 1, 2026. The company emphasizes her extensive mining, board and capital markets experience as a valuable addition to its governance.

Who is Catherine McLeod-Seltzer, the new IAMGOLD (IAG) director?

Catherine McLeod-Seltzer is a mining executive with over four decades of industry experience. She has co-founded and led multiple mining companies and served on boards including Teck Resources, Flow Capital and previously Kinross Gold as Chair from 2019 to 2025.

When does Catherine McLeod-Seltzer join the IAMGOLD (IAG) board?

Her appointment to the IAMGOLD board becomes effective on September 1, 2026. The announcement notes that her skills are expected to support IAMGOLD as it builds on its operational foundation and growth opportunities.

What mining operations does IAMGOLD (IAG) currently have?

IAMGOLD operates gold mines in North America and West Africa, including Côté Gold, Westwood and Essakane. Côté Gold in Canada is described as one of the largest gold mines in production and is held in a 70|30 partnership with Sumitomo Metal Mining.

How large is IAMGOLD’s (IAG) workforce and where is it based?

IAMGOLD is based in Canada and employs approximately 3,700 people. It positions itself as an intermediate gold producer and developer, with additional exploration projects in high-potential mining districts such as the Nelligan Mining Complex in Quebec.

What notable achievements are highlighted in Catherine McLeod-Seltzer’s background relevant to IAMGOLD (IAG)?

Her background includes growing Arequipa Resources from under $5 million capitalization to more than $1.1 billion at acquisition, co-founding Lucara Diamond and Peru Copper, and involvement in a $840 million sale of the Toromocho copper deposit.

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August 2026

Commission File Number: 001-31528

IAMGOLD Corporation
(Translation of registrant's name into English)

150 King Street West, Suite 2200
Toronto, ON Canada M5H 1J9
Tel: (416) 360-4710
(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

[   ] Form 20-F                        [ x ] Form 40-F

SUBMITTED HEREWITH

Exhibits

Exhibit		Description
99.1		News Release dated August 6, 2026

SIGNATURES

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, thereunto duly authorized.

	IAMGOLD CORPORATION
	(Registrant)
Date: August 6, 2026	By:	/s/ Annie Torkia Lagacé
		Annie Torkia Lagacé
	Title:	Chief Legal and Strategy Officer

IAMGOLD ANNOUNCES APPOINTMENT OF CATHERINE MCLEOD-SELTZER
TO THE BOARD OF DIRECTORS

All monetary amounts are expressed in U.S. dollars, unless otherwise indicated.

Toronto, Ontario, August 6, 2026 - IAMGOLD Corporation (TSX:IMG, NYSE:IAG) ("IAMGOLD" or the "Company") today announced that Ms. Catherine McLeod-Seltzer has been appointed to the Company's board of directors effective September 1, 2026.

"We are pleased to welcome Catherine McLeod-Seltzer to the board of directors of IAMGOLD," commented David Smith, Chair of the Board of IAMGOLD. "Catherine is a highly accomplished leader in the Canadian mining industry, offering a combination of executive, board and capital markets experience. Her track record of building companies and creating shareholder value across the sector will be a valuable addition to our board as IAMGOLD builds on its strong operational foundation and opportunities for further growth."

Ms. McLeod-Seltzer brings more than four decades of mining industry experience as both a senior executive and public-company director. She currently serves on the boards of Teck Resources Limited and Flow Capital Corp. She recently completed the sale of Bear Creek Mining Corporation, which she co-founded and chaired, and retired as Chair of Kinross Gold Corporation, a role she held from 2019 to 2025.

Earlier in her career, Ms. McLeod-Seltzer was Co-Founder, President and CEO of Arequipa Resources Ltd., which grew from a capitalization of under $5 million to more than $1.1 billion before its acquisition by Barrick Gold. She also co-founded Lucara Diamond Corp., owner of the Karowe diamond mine in Botswana, and Peru Copper Inc., which acquired the Toromocho copper deposit and was later acquired by Chinalco for $840 million. Her other board roles have included Major Drilling Group International Inc., Miramar Mining Corp. and Pacific Rim Mining Corp.

In 2026, Ms. McLeod-Seltzer was inducted into the Canadian Mining Hall of Fame. Her earlier honours include the Northern Miner's "Mining Man of the Year" (1999) and the Women's Executive Network "Canada's 100 Most Powerful Women" Corporate Directors Award (2012). She holds a Bachelor of Business Administration from Trinity Western University.

About IAMGOLD

IAMGOLD is an intermediate gold producer and developer based in Canada with operating mines in North America and West Africa, including Côté Gold (Canada), Westwood (Canada) and Essakane (Burkina Faso). The Côté Gold Mine is among the largest gold mines in production in Canada, which IAMGOLD operates in a 70|30 partnership with Sumitomo Metal Mining Co. Ltd. ("SMM"). In addition, the Company has an established portfolio of early stage and advanced exploration projects within high potential mining districts, including the large-scale Nelligan Mining Complex located in Quebec, Canada. IAMGOLD employs approximately 3,700 people and is committed to maintaining its culture of accountable mining through high standards of Environmental, Social and Governance practices. IAMGOLD is listed on the New York Stock Exchange (NYSE:IAG) and the Toronto Stock Exchange (TSX:IMG).

IAMGOLD Contact Information

Graeme Jennings, Vice President, Business Development & Investor Relations

Tel: 416 360 4743 | Mobile: 416 388 6883

Toll-free: 1 888 464 9999

info@iamgold.com

Filing Exhibits & Attachments

2 documents

Press Releases

• EX-99.1 EXHIBIT 99.1 5.2 KB
• EX-99.1 EXHIBIT 99.1 188.4 KB