Current Report · Items 8.01 · 8-K

Graphic Packaging Holding Company

GPKNYSEEQUITYCurrent

Other Events

Filed Aug 17, 2026Accepted Aug 17, 2026, 4:05 PM EDTCIK 1408075Accession 0001193125-26-354027

Company context

Graphic Packaging Holding Company (NYSE: GPK), headquartered in Atlanta, Georgia, designs and produces consumer packaging made primarily from renewable or recycled materials. An industry leader in innovation, the Company is committed to reducing the environmental footprint of consumer packaging. Graphic Packaging operates a global network of design and manufacturing facilities serving the world’s most widely recognized brands in food, beverage, foodservice, household and other consumer products.

Current securities

GPKNYSE · EQUITY · Current

Recent company filings

Disclosure sections

Items 8.01

Select an item to read the extracted section. The as-filed document remains the primary evidence.

Item 8.01Item 8.01 - Other Events

Item 8.01. Other Events. On August 14, 2026, a purported stockholder of Graphic Packaging Holding Company (“GPHC”) filed a derivative lawsuit against GPHC and certain current and former officers and directors as individual defendants (the “August 2026 Derivative Action”). The August 2026 Derivative Action asserts claims for violations of federal securities laws and for breach of fiduciary duty, aiding and abetting breach of fiduciary duty, waste of corporate assets and unjust enrichment. The allegations set forth and relief sought in the August 2026 Derivative Action are substantially similar to the allegations and relief sought in the June 2026 derivative action filed against GPHC and certain current and former officers and directors as previously disclosed in GPHC’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2026. GPHC intends to vigorously defend against the claims in the August 2026 Derivative Action. - 2 -

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