Reverse Stock Split OKd for International Remote

International Remote Imaging Systems, a Chatsworth medical-equipment maker, said that its shareholders approved a 1-for-5 reverse stock split and that the company may repurchase some shares on the open market in the next 30 days.

The reverse split was effective Friday.

In a reverse stock split, a company reduces the number of shares outstanding. After such a split, the total number of shares has the same market value as before, but each share is worth more.

International Remote also said its stock had graduated to the primary list of the American Stock Exchange from the exchange’s “emerging company marketplace” for small company stocks.