| QL Holdings, LLC | QLOGIC CORPORATION | QLT Inc. ( Vancouver, BC ) |
| QL Holdings, LLC ( Eugene, OR ) | QLOGIC Corporation ( Aliso Viejo, CA ) | QLT Inc. ( Vancouver, British Columbia ) |
| QL Inc. ( Northbrook, IL ) | QLogic Corporation ( Costa Mesa, CA ) | QLT Inc. ( Vancouver, CA ) |
| QL2 Software, Inc. ( Seattle, WA ) | QLogic Switch Products, Inc. | QLT Inc. ( Vancover, BC ) |
| QLAGEN GmbH | QLogic Switch Products, Inc. ( Eden Prairie, MN ) | QLT Plug Delivery, Inc. ( Menlo Park, CA ) |
| Qlayer NV ( Lochristi, BE ) | QLOGIC, Corp. ( Aliso Viejo, CA ) | QLT Plug Delivery, Inc. - QPDI ( Menlo Park, CA ) |
| QLB, LLC ( Charlotte, NC ) | QLOGIC, Corporation | QLT Plug Delivery, Inc. -QPDI ( Menlo Park, CA ) |
| QLD Learning, LLC ( Madison, WI ) | QLOGIC, Corporation ( Aliso Viejo, CA ) | QLT USA, INC. |
| QLH USA Inc. ( San Francisco, CA ) | QLOGIC, Corporation ( Alsio Viejo, CA ) | QLT USA, Inc. ( Fort Collins, CO ) |
| QLH USA, Inc. ( San Francisco, CA ) | QLT Co., Ltd ( Seoul, KR ) | QLT, Inc. |
| Qlicksmart Pty. Ltd. | QLT Imprint Supplies, Inc. ( New York, NY ) | QLT, Inc.( Vancouver ) |
| Qlicksmart Pty. Ltd. ( West End, Queensland ) | QLT Inc. | QLT, Inc. and( Vancouver ) |
| Qliktech International AB( Lund ) | QLT Inc.( British Columbia ) | Qlvac, Inc.( Chigasaki ) |
| QLINX | QLT Inc.( Vancouver ) | |
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