ok im just making a record here and im at the moment Categorizing the primarchs status's and here they are.
Dark Angels - Lion El' Jonson - In stasis deep inside the rock held by the watchers in the dark, the only other person who knows about this is luther who is to insane to talk, cypher possibaly might know aswell.
Emperor's Children - Fulgrim - Deamon Prince of Slannesh, obviously Slannesh appealed to his ways of making his legion perfect.
Iron Warriors - Perturabo - Deamon Prince, follows no god.
White Scars - Jaghatai Khan - missing after chasing the dark eldar into the Maelstorm.
Space Wolves - Leman Russ - Disapprered apprently into the Eye of Terror, will return for the wolf time, the final battle.
Imperial Fists - Rogal Dorn - Dead/missing, this is a strange one, what is definetly known is he stormed the bridge or the chaos ship Sacrilage. now here where it differs, some stories say all the following imperial fists found was his hand, and he is either dead or missing. other stories say that they have his body and his skeletal hand in their monastary which is probably the true version.
Night Lords - Konrad Curze/Nighthaunter - Beleived assasinated by callidus assasin M'shen although her video feed cut out just before the assasination. although it is belived Nighthaunter allowed himself to be killed to prove a point. He was reprimanded for his brutal methods, so he wanted to show that his methods and the Imperiums were the same. He killed those who broke the law and so did the Imperium.
Blood Angels - Sanguinius - our first 100% dead, without a doubt. Brutally murdered by Horus moments before the emperor arrived on the bridge of horus ship during the siege of the emperors palace, said by the Blood Angels to have made a dent in horus armour which was just enough for the emperor to kill him. such was the brutality of hsi death that his whole gene pool was tainted with the black rage.
Iron Hands - Ferrus Manus - Ferrus Manus fell in battle against the foul orks. His battle barge was rammed by an ork vessel and crash landed on the orc world below. Mighty was the stand made by Ferrus and his marines, but futile as they were overwhelmed by the uncountable ork horde. his body was recovered from a crude ork shrine that had been erected around his body, the heads of the orks that had fallen to his hand arranged like a carpet beside the wreckage of his battle barge. Even the foul orks can honour a great warrior(said by russ) other stories say he is missing, could be dead as of Istavaan V, another theory is that he is deep inside Mars.
Worldeaters - Angorn - Deamon Prince of Khorne which appealed to his martial honor. dont beleive he has recovered his physical form yet after being banished by grey knights on armagedon.
Ultramarines - Roboute Guilliman - Mortally wounded by Fulgrim who slit hsi throat with a poisened blade. In stasis on Macragge. some say he is impossibly healing although this is rumour.
Death Guard - Mortarion - Deamon Prince of Nurgle, corrupeted by the destoryer hive plauge, with Nurgle being his only chance to live
Thousand Sons - Magnus the Red - Deamon Prince of Tzeentch, obvious choice as he is a sorceror
Lunar Wolves/Sons of Horus/Blacklegion - Horus - Even more dead then Sanguinius, contrary to some beleifs he will never return, when the Emperor killed him he erased his entire existence, he erased his signiture in the warp and uterly destoryed him. as i said, deader then Sangunius
Word Bearers - Lorgar - Deamon Prince? not too much info given about this primarch
Salamanders - Vulcan - The fate of Vulkan is unknown, even his Salamanders will not speak of what became of their primach...(said by russ) Dead as of istavann V?, Missing? who knows again not alot of information given.
Raven Guard - Corax - Either, missing in the Eye Of Terror, or locked away in the topmost level of the Ravenspire looking for a way to recover his chapters numbers. Also belived to be in the black library as a passage refers to a 'raven-haired man' entering the library. Corax was forever haunted by what became of his legion after rebuilding it with desperate means when it was slaughtered by the warmasters forces. He left Deliverance and spoke only a single word to his marines in explanation, "Nevermore....."(said by Russ)
Alpha Legion - Alpharius - Dead, killed by Roboute Guilliman. although because of his double crossing nature and tricky ways ther is romours that it was not Alpharius that Guilliman killed.
well ther it all is. i have lots more information about most of the primarchs but have only put the current details or their staus i know of, if you know any differnt then please post here.
due to replys from people i will be updatin this with given information such as corax in the black library
Thanks to all the people who help update this. Erikjust i would like to thank for his account on a speach by Leman Russ himself.