Michael Laverty was unable to end his MotoGP season in points-scoring fashion as he finished 19th in Valencia.
The Toomebridge rider is set to return to British Superbikes after two years in the premier class of world racing.
Laverty accumulated nine points during the season to take 25th position overall, two places behind Paul Bird Motorsport team-mate Broc Parkes.
The former British Supersport champion secured a best finish of 12th place in Sepang, Malaysia, two weeks ago.
Laverty's team will not compete in the global series in 2015, but it is not yet clear if they will retain the services of the Northern Ireland rider.
Spaniard Marc Marquez broke Mick Doohan's long-standing record of 12 wins in a season by claiming his 13th success in Valencia on the Repsol Honda.
Italian Valentino Rossi ended second in the final standings, 67 point behind Marquez, but 32 points ahead of Yamaha team-mate Jorge Lorenzo.
"The weather made it quite a strange race today as right from the very first lap we had big drops of rain on our visors," said Laverty.
"I had good pace when the track was fully dry, but found it tough when the track got greasy as my rear tyre had began to cold tear.
"All in all it's been a good weekend, I was really happy with the lap time I pulled out in qualifying and we had a good setting going into the race today.
"It's a bit emotional today as it's the final MotoGP for the PBM team, but I'm finishing with a smile on my face, it's been a great life experience and I feel I'm a stronger rider for it."