Media and marketing research firm Arbitron (UNKNOWN:ARB.DL) announced today its third-quarter dividend of $0.10 per share, the same rate it's always paid since 2005.

The board of directors said the quarterly dividend is payable on October 1 to holders of record at the close of business on September 16.

Arbitron is in the process of merging with Nielsen Holdings. If the transaction is completed before September 16, the dividend will be pro-rated at a rate of $0.0010989010989011 per share per day for each day after June 17, the record date for its previous dividend.

The merger agreement ensures that, regardless of when the deal is consummated, stockholders will receive a dividend at the current rate. The pro rata dividend will be payable within 30 days after the merger closes to shareholders of record at the close of business on the day before the merger is completed.

The regular dividend payment equates to a $0.40-per-share annual dividend, yielding 0.9% based on the closing price today of Arbitron's stock.

ARB Dividend Chart

ARB Dividend data by YCharts.