Who owns Optimum Nutrition?
Optimum Nutrition is owned by Glanbia (Ireland, ISE: GL9), which has owned the brand since 2008.[1]
This ownership is reported in official statements but has not yet been matched to a regulatory filing.
Evidence: Glanbia — Full Year 2025 Results, Glanbia plc. Last checked .
Key facts
- Current owner
- Glanbia plc reported
- Owned since
- Owner HQ
- 🇮🇪 Ireland, Kilkenny
- Origin
- 🇺🇸 United States
- Category
- Food › Nutrition & supplements › Protein & sports nutrition
- Parent ticker
- ISE: GL9
- Last verified
- · 1 sources
About Optimum Nutrition
Optimum Nutrition is a US sports supplement brand that Glanbia calls the world's number one sports nutrition brand. Glanbia acquired it in 2008, when the business was one of its own customers, a move Glanbia describes as vertical integration from ingredients into brands. In 2025 it posted double-digit volume growth and ran a campaign across more than 100 markets.
Ownership timeline of Optimum Nutrition
Where Optimum Nutrition sits in Glanbia
Controlling ownership as of . Brands grouped under the entity that owns them; large groups are collapsed.
Open the full Glanbia ownership tree →
See the full Glanbia brand portfolio (5) →
Other brands owned by Glanbia
Glanbia controls 5 brands on Brandtree, 5 of them in food.
Also in food
Other brands in protein & sports nutrition, and who owns them
Glanbia has more brands in protein & sports nutrition on Brandtree than any other owner: 3 of 20.
| Brand | Owner | Owner based in |
|---|---|---|
| Dymatize | BellRing Brands | 🇺🇸 United States |
| OWYN | Simply Good Foods | 🇺🇸 United States |
| THE:Danbaek | Binggrae | 🇰🇷 South Korea |
| Vitamin Whey | Edible Garden | 🇺🇸 United States |
| Herbalife24 | Herbalife | 🇰🇾 Cayman Islands |
| Selex | Maeil Dairies | 🇰🇷 South Korea |
| OPTAVIA ACTIVE | Medifast | 🇺🇸 United States |
| TEHO | Olvi | 🇫🇮 Finland |
About the owner: Glanbia
Glanbia is a publicly listed company headquartered in Kilkenny, Ireland. Brandtree records 5 brands under its control, and it is listed as ISE: GL9.
Glanbia is an Irish nutrition group headquartered in Kilkenny, formed when Avonmore Foods and Waterford Foods merged in 1997 and renamed Glanbia, Irish for pure food, in 1999. It reported revenue of $3.9 billion in 2025 across Performance Nutrition, Health & Nutrition and Dairy Nutrition. It has moved from Irish dairy cooperative roots to US sports nutrition brands, selling its Glanbia Ireland stake in 2022 and SlimFast and Body & Fit in 2025. It also holds cheese joint ventures including Southwest Cheese.
🇺🇸 Optimum Nutrition and other American brands
Brandtree records a controlling owner for 2,570 brands that began in the United States. 501 of them (19%) are now controlled by a company headquartered in another country, Optimum Nutrition among them.
Frequently asked questions
Who is the parent company of Optimum Nutrition?
The parent company of Optimum Nutrition is Glanbia, a publicly listed company headquartered in Ireland.
Is Optimum Nutrition American or Irish?
Optimum Nutrition originated in the United States, but it is owned today by Glanbia, which is headquartered in Ireland. So Optimum Nutrition is an American-origin brand under Irish ownership.
Since when has Glanbia owned Optimum Nutrition?
Glanbia has owned Optimum Nutrition since 2008.
Is Optimum Nutrition still owned by Glanbia?
Yes. As of 16 September 2026, Optimum Nutrition is still owned by Glanbia. The ownership record was last checked against primary sources on that date.
Sources (1) & corrections
Last verified . Every ownership fact above is backed by one of these primary documents. Numbers in brackets in the text refer to this list.
- [1] Glanbia — Full Year 2025 Results — Glanbia plc, Annual report; retrieved 16 September 2026.
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