Mark Singer’s personal net worth is not publicly verified. He created the Gorilla Glue brand and company, then sold the business to a family in Cincinnati, according to his own account. He is now also associated with EyeWris, the wearable reading-glasses venture he developed with his son Kenzo. Figures such as $250 million or $300 million circulating online do not come with a disclosed sale price, current ownership stake or personal balance sheet.
Mark Singer at a glance
- Known for: Creating the Gorilla Glue brand, product and company.
- Earlier work: Furniture design and Giati Designs.
- Later venture: Founder and co-creator of EyeWris, with Kenzo Singer.
- Gorilla Glue today: A family-owned company in Cincinnati, according to its official site. Singer is not identified there as the current CEO.
- Net worth and sale price: Not publicly verified in the sources reviewed.
What is Mark Singer’s net worth?
Quick answer (September 2026): A published estimate puts him at $250 million to $300 million, but bases much of it on assumed continuing Gorilla Glue ownership and royalties. Singer said in his own account that he sold the business. The sale terms, any retained interest and his other assets and debts are not disclosed there; the range should not be stated as his actual net worth.
No defensible exact figure is available here. The previous article gave both $250 million and a $270 million to $300 million range, without financial records to support either. It also assumed Singer still held a major ownership stake and described rising Gorilla Glue “stock” as if the company were a publicly traded holding. That chain of reasoning fails once his own account of selling the company is considered.
To calculate personal wealth, we would need the terms of that sale, his later investments, income, assets and debts. A successful household brand does not reveal its creator’s present balance sheet. The value of today’s Gorilla Glue Company cannot simply be assigned to Singer, and the amount he received from selling it has not been disclosed in the sources used for this article.
Did Mark Singer found Gorilla Glue?
Yes. In a first-person account in Fine Woodworking, Singer explains how his work with teak furniture led him to look for a suitable adhesive. He encountered a Danish polyurethane glue used in Indonesia, asked for changes, obtained rights for North America and other territories, and developed the name and logo. His EyeWris biography also identifies him as creator of the Gorilla Glue product and company.
This is a more precise answer than saying he invented polyurethane glue itself. The key contribution in his account was spotting an application, securing rights and creating a marketable brand around the product.
Does he still own or run Gorilla Glue?
Singer wrote that he sold Gorilla Glue to a family in Cincinnati as he returned to woodworking. The company describes its present team as family-owned. Those sources contradict the older article’s description of him as its serving CEO and major shareholder. They do not give the exact sale date, price or current ownership structure, so this article does not invent those details.
What did Mark Singer do after Gorilla Glue?
Singer’s career did not start with glue. His first-person account describes furniture design, commercial production and Giati Designs, founded in 1991. His EyeWris company biography now names him founder and co-creator of its wearable reading glasses. It names his son Kenzo as co-creator and president, and describes the problem they set out to solve: keeping reading glasses close at hand.
For someone studying entrepreneurship, the useful thread is product observation. A difficult material in furniture led Singer to an adhesive opportunity, while a practical problem with misplaced glasses inspired a different product. Neither story proves a particular personal fortune.
Frequently asked questions
How much did Mark Singer sell Gorilla Glue for?
His account confirms a sale, but does not state the price. A number from an unsourced net-worth site should not be treated as a disclosed transaction value.
Is Mark Singer the current Gorilla Glue CEO?
The cited sources do not support that description. He says he sold the business, and the company’s site describes a family-owned team.
What is EyeWris?
It is the wearable reading-glasses venture Singer developed with Kenzo Singer. Their company page explains the concept and lists their roles.
Sources and correction
Reviewed 29 September 2026 using Singer’s first-person account, the Gorilla Glue company history and EyeWris biography. This version removes unsupported wealth, current CEO, shareholder, stock, investment and lifestyle claims. If transaction details become public, we can assess them separately from the current company’s value.
