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Characters are listed after importance (times of appearance with the company). Italic marked characters left the corresponding company. The length of characters appearance with a company is marked right off the character.
- Washington Herald - Zoe Barnes (Chapter 1-4), Janine Skorsky (Chapter 1-9), Lucas Goodwin (Chapter 1-17), Tom Hammerschmidt (Chapter 1-5), Margaret Tilden (before Chapter 1-?)
- Slugline - Zoe Barnes (Chapter 5-14), Janine Skorsky (Chapter 10-14), Carly Heath (Chapter 5-13)
- The Wall Street Telegraph - Ayla Sayyad (Chapter ?-29), Kate Baldwin (Chapter 30-?)
- NY Examiner - No character - Responsible for leaking photos evidencing Claire Underwood's affair with Adam Galloway.
Environment oriented companies
- Clean Water Initiative - Claire Underwood (Chapter 1-14), Gillian Cole (Chapter ?-?), Evelyn Baxter (Chapter 1-2)
- SanCorp - Remy Danton (Chapter 1-26)
- Clayton West - Raymond Tusk (founder and owner of a majority of shares), Xander Feng (shares holder),
- Province Trust - No character (Henry Chapman (lobbyist seen in Chapter 1))
- Corbet Rafting Inc. - Tim Corbet (Never appeared with - just mentioned as the CEO in Chapter 37)
- Pioneer Airlines - Raymond Tusk (shares holder), Garrett Walker (unknown - left before Chapter 1)
- Dunbar Armored Cars - Heather Dunbar (financial support for Democratic nomination race)
- SpaceX - Connor Ellis (Chapter 20-?)
- AT&T - No character - Mentioned as Lucas Goodwin is trying to break into their data plant and later, as Gavin Orsay is coercing the FBI with publishing the gained AT&T access codes.
Photography oriented companies
- Cannon - Adam Galloway (indirectly by using their photographing equipment)
Food oriented companies
- Google - Gillian Cole (unknown status)
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