Seagate to acquire Longmont-based Dot Hill for $645M

LONGMONT — Seagate Technologies plc said Tuesday it plans to acquire Longmont-based data-storage firm Dot Hill Systems Corp. in an all-cash deal valued at $645 million.

Seagate (Nasdaq: STX), based in Cupertino, Calif., has a campus in Longmont at 389 Disc Drive that employs 1,380 people. Dot Hill’s (Nasdaq: HILL) headquarters is at 1351 S. Sunset St. with approximately 250 employees.

How the proposed acquisition will affect employees has yet to be addressed by either company.

The transaction is expected to close during the fourth quarter of 2015.

Seagate, a provider of data-storage solutions worldwide, said one of its wholly owned indirect subsidiaries will…