Investor Carl Icahn, who derided the skills of Yahoo Chief Executive Jerry Yang and sparred with Chairman Roy Bostock in a bruising proxy fight, voiced hope Thursday that a recent meeting will be “the beginning of a beautiful friendship.”

In a posting on his blog, Mr. Icahn, who said he would not attend Yahoo’s annual meeting Friday for fear of creating a media circus, told of a meeting with Mr. Yang and Mr. Bostock.

In an apparent allusion to one of the memorable lines from the movie “Casablanca,” Mr. Icahn wrote: “While we still disagree on many points, I have great hope ‘this will be the beginning of a beautiful friendship.’ "

During the proxy fight, Mr. Icahn, who controls about 5 percent of Yahoo’s shares, had said he would hire a “talented and experienced” chief executive and return Mr.  Yang to his previous role as “chief yahoo.”

For their part, Mssrs. Yang and Bostock portrayed Mr. Icahn as a “corporate agitator” in search of short-term profits.

Yahoo shares edged down $.03, or .15 percent, to $20 Thursday afternoon, far off its close of $28.38 on February 1, the day that Microsoft unveiled a $31 per share takeover bid. After several months, those acquisition talks—and Yahoo’s share price—collapsed. Mr. Icahn publicly blamed Yahoo’s board and management for mishandling the offer and mounted a proxy fight to oust the incumbents.

On July 21, Mr. Icahn and Yahoo announced a truce accord under which Mr. Icahn and two others from a list of nine candidates submitted by the investor would take seats on a board that is to expand from nine to 11 members.

“Last week, I realized it was impossible to gain enough support from the large institutions to win a majority of the Yahoo directorships,” he wrote, citing the control exerted by mutual funds that make it difficult to oust and entire board.

A key part of the agreement, Mr. Icahn said, was a provision to consult the entire board before any “meaningful transaction” is concluded and his inclusion on any committee to negotiate such a deal.