Davis, 31, is the headliner of the group. He will reportedly earn $16.5 million, according to Fancred's Jon Heyman. That represents a $6 million raise from last season, but it's $1.6 million less than MLB Trade Rumors' arbitration projection of $18.1 million.
Davis led all of baseball with 48 home runs last season and finished second with 123 RBI, while batting .247 for an unprecedented fourth consecutive season. He is scheduled to become a free agent following the 2019 season.
Semien's deal is reportedly worth $5.9 million, according to USA Today's Bob Nightengale. The 28-year-old earned $3.125 million last season and was projected by MLB Trade Rumors to get $6.6 million in arbitration.
Semien hit .255/.318/.388 with 15 home runs and 70 RBI last season. He also made great strides defensively and was named a Gold Glove Award finalist at shortstop. He still has one more year of arbitration eligibility.
Profar will reportedly earn $3.6 million, according to The Athletic's Robert Murray. The 25-year-old made $1.05 million last season and was projected by MLB Trade Rumors to get $3.4 million in arbitration.
Profar is coming off a breakout season with the Texas Rangers. He slashed .254/.335/.458 with a career-high 20 home runs and 77 RBI. Profar has one more year of arbitration eligibility.
Canha, 29, will earn $2.05 million, a source confirmed to NBC Sports California. Murray first reported the news. Canha was projected by MLB Trade Rumors to get $2.1 million in his first year of arbitration.
Last season, Canha hit .249/.328/.449 with a career-high 17 home runs and 52 RBI. He tore up left-handed pitching, slashing .282/.337/.604 with 13 homers and 28 RBI in 149 at-bats.
Manaea will reportedly earn $3.15 million, according to MLB's Mark Feinsand. He was projected by MLB Trade Rumors to get $3.8 million in his first year of arbitration eligibility. The left-hander is still recovering from shoulder surgery and is expected to be out until at least the All-Star break.
Manaea, 26, went 12-9 with a 3.59 ERA and 1.08 WHIP in 27 starts last year before undergoing his season-ending surgery. He tossed the A's first no-hitter in nearly eight years on April 21 against the eventual World Series champion Boston Red Sox.
All-Star closer Blake Treinen is now the A's only remaining arbitration-eligible player. According to Nightengale, Treinen filed for $6.4 million while the A's submitted $5.6 million. MLB Trade Rumors projected the 30-year-old right-hander to get $5.8 million in arbitration after earning $2.15 million last year.
Treinen is coming off one of the best seasons in MLB history, finishing 9-2 with 38 saves and a 0.78 ERA. He recorded 100 strikeouts in 80 1/3 innings, allowing just 46 hits and 21 walks.