A director of Herbalife Ltd., which sells weight-management and nutritional supplement products, bought 5,000 shares of stock, according to a Securities and Exchange Commission filing Friday.

In a Form 4 filed with the SEC, Hal Gaba reported he bought the shares for $44.90 apiece on Wednesday.

Insiders file Form 4s with the SEC to report transactions in their companies' shares. Open market purchases and sales must be reported within two business days of the transaction.