Coach Tom Coughlin remains irritated and frustrated that receiver Hakeem Nicks has stayed away from the Giants’ organized team activity practices. It was OTA No. 4 yesterday and, again, Nicks was a no-show.

“At one point Hakeem told me that he was going to be here and then he was not here,’’ Coughlin said after practice Thursday. “Now the strictest interpretation, as everybody knows, is it’s a voluntary program.’’

Voluntary means there are no financial repercussions for not attending OTAs. When players cannot make a practice on a certain day, usually they inform the coaching staff they will not be on the scene. Coughlin said he hasn’t heard from Nicks and believes no one in the Giants organization has been in touch with Nicks for an explanation. The absences are not believed to be tied to any dissatisfaction with his contract and sources have speculated Nicks is dealing with a personal situation.

“I’m not saying anything,’’ said Peter Shaffer, Nicks’ agent, when contacted by The Post. “I’m not being rude. I’m not saying anything and Mr. Nicks is not saying anything. Everyone’s good, Hakeem’s good.’’

Asked how he balances the desire to have his players on the field and the voluntary nature of the practices, Coughlin said, “How do I balance it? Not very well.’’

Justin Tuck said Nicks’ absence without contacting the Giants is “kind of worrying that you don’t communicate.’’ Tuck said he always makes sure Coughlin knows when he is going to miss a session.