There are 8 unique codex entries in the Organizations section on Corellia. 4 are accessible to all players regardless of class or faction, 1 is faction specific, and 3 are class specific.
Corellian Corporate Council (Bounty Hunter) is obtained from speaking with General Krau during "Hostile Takeover" mission.
Codex type: Organizations | Faction: Imperial | Class: Bounty Hunter
Associated Achievement: None
Corellian Engineering Corporation is obtained from interacting with a Clickable Sign.
Codex type: Organizations | Faction: Imperial | Class: All
Associated Achievement: None
Corellian Security Force (CorSec) is obtained from speaking with Raddus Venn during "[HEROIC 2+] CorSec Crackdown" mission as an Imperial player or General Aves during "Blockade Runner" mission as a Republic player.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
The Corellian Rebellion is obtained from interacting with a Clickable Sandbag.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
The Green Jedi is obtained from interacting with a Clickable Plaque.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
The Imperial Guard is obtained from speaking with Commander Tainor during "Down in History" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
The Outer Rim Jedi Forces (Knight) is obtained from speaking with Captain Rikdine during "Jedi Commander" mission.
Codex type: Organizations | Faction: Republic | Class: Jedi Knight
Associated Achievement: None
The Supreme Guard (Bounty Hunter) is obtained from interacting with the Hangar Security Console during "Number One with a Bullet" mission.
Codex type: Organizations | Faction: Imperial | Class: Bounty Hunter
Associated Achievement: None