SHAREHOLDER INVESTIGATION: Halper Sadeh LLP Investigates COLB, TSC, PAE, MNTV, DWSN; Shareholders are Encouraged to Contact the Firm

NEW YORK, Nov. 22, 2021 /PRNewswire/ -- Halper Sadeh LLP, a global investor rights law firm, announces it is investigating the following companies:

Columbia Banking System, Inc. (NASDAQ: COLB) concerning potential violations of the federal securities laws and/or breaches of fiduciary duties relating to its merger with Umpqua Holdings Corporation. Under the terms of the agreement, Umpqua shareholders will receive 0.5958 of a share of Columbia stock for each Umpqua share they own. Upon completion of the transaction, Columbia shareholders will own approximately 38% of the combined company. If you are a Columbia shareholder, click here to learn more about your rights and options.