NEW YORK, Aug 28 (Reuters) - Institutional Shareholder

Services on Thursday urged TaskUS ( TASK ) investors to reject a

plan proposed by investment firm Blackstone and two of

TaskUS' ( TASK ) co-founders to take the outsourcing company that handles

content moderation private.

"There does not appear to be a compelling reason to accept

the terms," the influential proxy advisory firm wrote in its

recommendation which was seen by Reuters. Shareholders are

scheduled to vote on September 10.

ISS argues the offer made by Blackstone and Bryce Maddock

and Jaspar Weir in May to pay $16.50 to take the company private

"may have represented a premium at announcement, but it appears

that the unaffected price is not the most appropriate reference

point for value at this stage." The stock closed at $17.40 on

Thursday.