Pittsburgh selected Almari in the fifth round (151st overall) of the 2016 NHL Draft. He played the last three years in his native Finland with HPK, helping the club win the playoff championship in the top Finnish league, Liiga, earlier this month.
"Since we drafted Niclas he has developed exactly how we want our prospects to progress, at a steady incline," assistant general manager Bill Guerin said. "Each year, he has continued to get better. When we drafted him, he was playing big minutes for his junior team. Niclas eventually graduated to Finland's top league, getting his feet wet by playing a secondary role before assuming major minutes for eventual league champion HPK this year.
"Now we feel he is ready to come over to North America and contribute. As is the case with any young player that we bring over, we want to manage expectations his first year and put Niclas in a position to succeed."
Almari, who will turn 21 on May 11, skated in all 18 playoff games for HPK during its championship run, which ended victoriously on May 4. During the regular season, Almari saw action in 42 contests, contributing five points (1G-4A).