This reading order includes Ultimate Reed Richards before he turned into The Maker. If you are only interested in The Maker and not Ultimate Reed Richards prior to his change start reading after Ultimatum.

Ultimate Fantastic Four #1 (2004)
Ultimate Fantastic Four #2
Ultimate Fantastic Four #3
Ultimate Fantastic Four #4
Ultimate Fantastic Four #5
Ultimate Fantastic Four #6
Ultimate Fantastic Four #7
Ultimate Fantastic Four #8
Ultimate Fantastic Four #9
Ultimate Fantastic Four #10
Ultimate Fantastic Four #11
Ultimate Fantastic Four #12
Ultimate Fantastic Four #13
Ultimate Fantastic Four #14
Ultimate Fantastic Four #15
Ultimate Fantastic Four #16
Ultimate Fantastic Four #17
Ultimate Fantastic Four #18
Ultimate Fantastic Four #19
Ultimate Fantastic Four #20
Ultimate Fantastic Four #21
Ultimate Fantastic Four #22
Ultimate Fantastic Four #23
Ultimate Fantastic Four #24
Ultimate Fantastic Four #25
Ultimate Fantastic Four #26

Ultimate Fantastic Four Annual #1 (2005)

Ultimate Fantastic Four #27
Ultimate Fantastic Four #28
Ultimate Fantastic Four #29
Ultimate Fantastic Four #30
Ultimate Fantastic Four #31
Ultimate Fantastic Four #32

Ultimate Fantastic Four Annual #2 (2006)

Ultimate Nightmare #1 (2004)
Ultimate Nightmare #2
Ultimate Nightmare #3
Ultimate Nightmare #4
Ultimate Nightmare #5

Ultimate Secret #1 (2005)
Ultimate Secret #2
Ultimate Secret #3
Ultimate Secret #4

Ultimate Extinction #1 (2006)
Ultimate Extinction #2
Ultimate Extinction #3
Ultimate Extinction #4
Ultimate Extinction #5

Ultimate X4 #1 (2006)
Ultimate X4 #2

Ultimate Fantastic Four #33
Ultimate Fantastic Four #34
Ultimate Fantastic Four #35
Ultimate Fantastic Four #36
Ultimate Fantastic Four #37
Ultimate Fantastic Four #38
Ultimate Fantastic Four #39
Ultimate Fantastic Four #40
Ultimate Fantastic Four #41
Ultimate Fantastic Four #42
Ultimate Fantastic Four #43
Ultimate Fantastic Four #44
Ultimate Fantastic Four #45
Ultimate Fantastic Four #46
Ultimate Fantastic Four #47
Ultimate Fantastic Four #48
Ultimate Fantastic Four #49
Ultimate Fantastic Four #50
Ultimate Fantastic Four #51
Ultimate Fantastic Four #52
Ultimate Fantastic Four #53
Ultimate Fantastic Four #54
Ultimate Fantastic Four #55
Ultimate Fantastic Four #56
Ultimate Fantastic Four #57

Ultimate X-Men/Fantastic Four Annual #1 (2008)

Ultimate Fantastic Four/X-Men Annual #1 (2008)

Ultimate Origins #1 (2008)
Ultimate Origins #2
Ultimate Origins #3
Ultimate Origins #4
Ultimate Origins #5

Ultimatum #1 (2008)
Ultimatum #2

Ultimate Fantastic Four #58
Ultimate Fantastic Four #59

Ultimatum #3

Ultimate Fantastic Four #60

Ultimatum #4
Ultimatum #5

Ultimate Fantastic Four Requiem #1 (2009)

Ultimate Enemy #1 (2010)
Ultimate Enemy #2
Ultimate Enemy #3
Ultimate Enemy #4

Ultimate Mystery #1 (2010)
Ultimate Mystery #2
Ultimate Mystery #3
Ultimate Mystery #4

Ultimate Doom #1 (2011)
Ultimate Doom #2
Ultimate Doom #3
Ultimate Doom #4

Ultimate Fallout #1 (2011)
Ultimate Fallout #2
Ultimate Fallout #3
Ultimate Fallout #4
Ultimate Fallout #5
Ultimate Fallout #6

Ultimate Comics Ultimates #1 (2011)
Ultimate Comics Ultimates #2
Ultimate Comics Ultimates #3
Ultimate Comics Ultimates #4
Ultimate Comics Ultimates #5
Ultimate Comics Ultimates #6
Ultimate Comics Ultimates #7
Ultimate Comics Ultimates #8
Ultimate Comics Ultimates #9
Ultimate Comics Ultimates #10
Ultimate Comics Ultimates #11
Ultimate Comics Ultimates #12

Ultimate Comics Ultimates #25
Ultimate Comics Ultimates #26
Ultimate Comics Ultimates #27
Ultimate Comics Ultimates #28
Ultimate Comics Ultimates #29
Ultimate Comics Ultimates #30

Hunger #1 (2013)
Hunger #2
Hunger #3
Hunger #4

Cataclysm #0.1 (2013)

Cataclysm: Ultimate Spider-Man #1 (2013)

Cataclysm: Ultimate X-Men #1 (2013)
Cataclysm: Ultimate X-Men #2
Cataclysm: Ultimate X-Men #3

Cataclysm: Ultimates’ Last Stand #1 (2013)

Cataclysm: Ultimates #1 (2013)

Cataclysm: Ultimates’ Last Stand #2

Cataclysm: Ultimates #2
Cataclysm: Ultimates #3

Cataclysm: Ultimate Spider-Man #2
Cataclysm: Ultimate Spider-Man #3

Cataclysm: Ultimates’ Last Stand #3
Cataclysm: Ultimates’ Last Stand #4
Cataclysm: Ultimates’ Last Stand #5

Survive #1 (2014)

Ultimate FF #1 (2014)
Ultimate FF #2
Ultimate FF #3
Ultimate FF #4
Ultimate FF #5
Ultimate FF #6

Avengers Vol. 5 #41

Avengers Vol. 5 #44

Secret Wars #0 (2015)
Secret Wars #1
Secret Wars #2
Secret Wars #3
Secret Wars #4
Secret Wars #5
Secret Wars #6
Secret Wars #7
Secret Wars #8
Secret Wars #9

Avengers Vol. 6 #0 (2015) - Everything is New

New Avengers Vol. 4 #1 (2015)
New Avengers Vol. 4 #2

New Avengers Vol. 4 #5

New Avengers Vol. 4 #7

New Avengers Vol. 4 #12
New Avengers Vol. 4 #13
New Avengers Vol. 4 #14
New Avengers Vol. 4 #15
New Avengers Vol. 4 #16
New Avengers Vol. 4 #17
New Avengers Vol. 4 #18

Ultimates 2 Vol. 2 #8
Ultimates 2 Vol. 2 #9

Ultimates 2 #100

Venom Vol. 4 #7
Venom Vol. 4 #8
Venom Vol. 4 #9
Venom Vol. 4 #10
Venom Vol. 4 #11
Venom Vol. 4 #12

Read Absolute Carnage here.

Future Foundation #1 (2019)
Future Foundation #2
Future Foundation #3
Future Foundation #4
Future Foundation #5

Venom Vol. 4 #26

Read Ultimate Universe here.