Zenith National Insurance Corp

Zenith National Insurance Corp. reported that it had exchanged some 985,000 shares of common stock for seven-year notes due Dec. 1, 1994. The Encino firm specializes in workers' compensation coverage.

Zenith National Insurance Corp. of Woodland Hills reported a net loss of $12.2 million for the third quarter ended Sept. 30, compared with a net loss of $37.3 million for the same quarter last year. Revenue dipped to $112.9 million from $118.5 million. Zenith underwrites property and casualty insurance, particularly workers' compensation insurance.

Zenith National Insurance Corp. in Woodland Hills reported a net loss of $19.6 million for the second quarter ended June 30, compared with a net loss of $3.4 million for the same quarter last year. Revenue rose slightly to $110.8 million from $106.5 million. Zenith underwrites workers' compensation insurance and reinsurance.

A Rancho Mirage investor has reduced his stake in Zenith National Insurance Corp. in Woodland Hills to 712,298 shares of common stock, or 3.8% of the total outstanding. In a filing with the Securities and Exchange Commission, investor Daniel Schwartz said he sold 155,000 Zenith National shares for $16 each, or a total of $2.48 million, between Jan. 3 and 7.

Woodland Hills-based Zenith National Insurance Corp. said its Zenith Insurance Co. unit will acquire all the assets and workers' compensation insurance business of Riscorp Inc. for at least $35 million in cash. Zenith, which specializes in workers' comp insurance, will also acquire Riscorp's existing insurance business, the right to new and renewal policies, and its managed-care workers' comp system.

Zenith National Insurance Corp. in Woodland Hills reported a $9.1-million third-quarter profit following an $11.8-million loss a year earlier. The company's revenue in the three months ended Sept. 30 was $137.1 million, up 5% from $130.3 million in the third quarter of 1995. Zenith's nine-month results included a $32.2-million profit, up from $5.3 million in the comparable period the year before. Revenue rose 4% to $405.3 million from $388.3 million. Zenith is a property and casualty insurer.

Zenith National Insurance Corp., a Woodland Hills-based property, casualty, auto and workers' compensation insurer, said it has repurchased a block of 1 million shares of its common stock on the New York Stock Exchange. The block does not include a repurchase authorization announced Dec. 10, 1992, for an additional 1 million shares. Under that ongoing authorization, 539,920 shares have been repurchased for about $11.7 million, the company said. Zenith said more than 17.

Zenith National Insurance Corp. reported a 35% drop in its first-quarter profit because of the Northridge earthquake in January and a lower level of investment gains. The Woodland Hills property, casualty and workers' compensation insurer said its net income in the three months that ended March 31 was $8.2 million, compared with a $12.6-million profit a year ago. Its revenue slipped 3% from $143.3 million to $138.3 million. Zenith said its losses from the earthquake totaled $9.

Cincinnati financier Carl H. Lindner has raised his stake in Zenith National Insurance Corp. to 9.7% of the Woodland Hills-based insurer. In a filing with the Securities and Exchange Commission, Lindner's American Financial Corp. said it bought an additional 400,000 shares of Zenith National on Nov. 5 from a Zenith National director, Daniel Schwartz, and certain trusts of which Schwartz is a co-trustee. American Financial paid $17.25 a share, or $6.9 million, for the stock.