"longstanding director" is a valid and grammatically correct phrase in written English.
For example: "The long-standing director of the museum was an integral part of the local community."
Golda Tencer, a Polish-Jewish actress and wife of the theatre's longstanding director, Szymon Szurmiej, launched the Singer Festival in 2004 and has directed it ever since.
CLASSICAL MUSIC MUSIC AT THE CLOSE Sept. 26 Philippe de Montebello is a gracious man, and the Metropolitan Museum is bidding its longstanding director farewell in a gracious manner.
Speaking to the El País newspaper last year, the longstanding director of the cave, José Antonio Lasheras, said: "Management's mission is to regulate proper conservation and use of the caves and it could be that what was once considered appropriate is no longer so, and vice-versa.
For that, Schulze will be relinquishing his role as chairman on June 21, which will soon be filled by longstanding director (and Audit Committee head) Hatim Tyabji.
She was renowned for her graciousness in defeat; according to the longstanding literary director of the prize Ion Trewin, she smiled wistfully and sighed "maybe next time".
Sir Michael Rake, a longstanding Barclays director, said the board was forcing Jenkins out because "notwithstanding Antony's significant achievements, it became clear to all of us that a new set of skills were required for the period ahead".
Names in the frame include Gregory Doran who, as longstanding associate director at the RSC, is surely the crown-prince-in-waiting (though that is never a guarantee, of course).
On Thursday night, more than 100 members of the Players, a private club founded for actors, crowded into the main dining room of its 1847 Greek Revival town house on Gramercy Park for a vote on whether to oust their longstanding executive director.
In the 1990s I worked for Harvey Lichtenstein, the innovative arts administrator and longstanding Executive Director of the Brooklyn Academy of Music.
Audrey was a longstanding and dedicated Director and all who knew her took pleasure in working by her side.
Johnson Controls said that this year it had "reinstated its longstanding policy of director attendance at the annual meeting".
