2006-07: His first year with Lulea’s top Elitserien club, Omark potted eight goals and 17 points in 50 games, earning a Elitserien Rookie of the Year nomination for his efforts. He also joined up with the Swedish U20 Team, where he scored five points (2g+3a) in seven games at the WJC.
2007-08: The Lulea HF (Elitserien) forward netted 11 goals and 32 points in 55 games during his second year with the top club.
2008-09: Omark was the leading scorer for fifth-place Lulea in his third full season in Sweden's Elitserien and skated for third-place Sweden at the 2009 IIHF World Championship. In 53 games he scored 23 goals with 32 assists and was +18 with a team-high 66 PMs. In five playoff games he had 5 assists and was -2 with 4 PMs. In nine games with Team Sweden as a 22-year-old he scored 2 goals with 8 assists and was +5 with 14 PMs. Omark and Lulea teammate Johan Harju (TBL) signed contracts with the KHL's Moscow Dynamo in April 2009.
2009-10: Omark was the third-leading scorer for Dynamo Moscow as the club finished second in the Bobrov Division and reached the KHL playoffs. He scored 20 goals with 16 assists and was -14 with 34 PMs. He also played for Sweden at the 2010 IIHF World Championship and had 1 goal and 3 assists and was an even plus/minus with 8 PMs in nine games. Sweden won the bronze medal after defeating the hosts Germany in the third-place game. Omark signed a two-year, entry-level contract with Edmonton in April 2010.
2010-11: Omark made his NHL debut in December after opening the season with Edmonton's AHL affiliate in Oklahoma City and skated in 51 games for the Oilers. Omark scored 5 goals with 22 assists and was -16 with 26 PMs while averaging over 15 minutes of ice time per game. Omark was Oklahoma City's sixth-leading scorer despite skating in just 28 regular season contests; scoring 14 goals with 17 assists and finishing +7 with 32 PMs. In six AHL playoff games he had 1 goal with 2 assists and was even with 4 PMs.
A flashy player with first-class technical skills and hands. Very creative with good hockey sense and natural scoring ability. Defense is a work in progress though it has improved over the past couple years. Quick skater with great agility and can dangle. Omark will challenge defenders one-on-one, scores goals from odd angles by banking pucks off goalies or defensemen from behind the net, and excels at being unpredictable. He could stand to add a bit more strength and the big knocks against him can be filed under the attitude/work ethic/consistency headings. He doesn't always bring the same effort level game to game, and has a penchant to go beyond confidence into cockiness--both things he will need to work on.
He has shown ability as a top nine forward so far in his NHL career, and in the right situation would excel in a 2nd/3rd line winger with power play responsibilities role. There are questions about whether that will occur in Edmonton or if he'll need to move on to get that chance, but the ability is undoubtedly there.