OPB METHODOLOGY
ORR Pin Bridge (Explainer Rail)
ORR is the change-control rail for this Explainer — one FFIEC stack per cvr_cycle_id, one narrative pin per pre-close deal.
Deal teams should recognize these TRNSFM markings; OPB foots them at the Explainer cut plane for client-side audit.
Me = slice @ pin. Them = merged standalone @ pin. Post-close absorption is a lineage assumption only.
PRC bridge reads Smartmarkets LIBRARY at pin-replayed org_keys — same accretion instrument as forward minted DealCard, just with a past-tense exemplary cut.
See Prompt Chip for the production mint on your next deal. This Review Explainer trains the bridge — not production mint (you will not be able to mint this deal card; Them is already rolled under).
ORR STACK / CHANGE PLANE
Explainer Cut @ 2025-08-31
Pin 2025-08-31 · ORR-8150-bank-2026Q2-rev1 · Me org_key 812078816 · Them org_key 813489594 standalone @ pin.
Exclude transforms on or after 2025-09-01 (forward CVR).
Pre-pin stack changes (newest first):
2023-03-01 — Umpqua Holdings Corporation → Columbia Banking System, Inc. → Me stack change
2021-10-01 — Bank Of Commerce Holdings → Columbia Banking System, Inc. → Me stack change
2018-07-01 — Grandpoint Capital, Inc. → Pacific Premier Bancorp, Inc. → Them stack change
2017-11-01 — Pacific Continental Corporation → Columbia Banking System, Inc. → Me stack change
2017-11-01 — Plaza Bancorp → Pacific Premier Bancorp, Inc. → Them stack change
2017-04-01 — Heritage Oaks Bancorp → Pacific Premier Bancorp, Inc. → Them stack change
2016-02-01 — Security California Bancorp → Pacific Premier Bancorp, Inc. → Them stack change
2014-11-01 — Intermountain Community Bancorp → Columbia Banking System, Inc. → Me stack change
2013-04-01 — West Coast Bancorp → Columbia Banking System, Inc. → Me stack change
2007-07-23 — Mountain Bank Holding Company → Columbia Banking System, Inc. → Me stack change
2007-07-23 — Town Center Bancorp → Columbia Banking System, Inc. → Me stack change
1997-12-02 — Cascade Bancorp, Inc. → Columbia Banking System, Inc. → Me stack change
1993-08-16 — Columbia National Bankshares, Inc. → Columbia Banking System, Inc. → Me stack change
Post-close (excluded from geography):
2025-09-01 — RSSD 3489594 → RSSD 2078816 [after pin · TRNSFM_CD=1]
2025-09-01 — Pacific Premier Bancorp, Inc. → Columbia Banking System, Inc. [after pin · TRNSFM_CD=1]
Internal control: PRC @ 2025-08-31 = stack after scroll above, before post-close absorption.