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- Departure of CFO (new) — Chief Accounting Officer Chris Herbold is retiring from the company on August 31, 2026.
Plains All American CFO Chris Herbold to retire Aug 31; 24-year veteran Russ Montgomery promoted
Filed June 2, 2026 · Period ending June 1, 2026 · ~1 min read
Key Changes
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Chief Accounting Officer Chris Herbold retiring effective August 31, 2026, marking the departure of a senior financial officer responsible for accounting and financial reporting functions.
Item 5.02 verify on EDGAR → -
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Russ Montgomery, current VP and Controller since 2019, promoted to Chief Accounting Officer effective September 1, 2026, ensuring continuity with an internal successor.
Item 5.02 verify on EDGAR → -
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Montgomery brings 24 years of company experience across progressively senior accounting roles including Controller (2010-2019), operational accounting, and SEC/financial reporting positions.
Item 5.02 verify on EDGAR →
Summary
Plains All American Pipeline announced a planned leadership transition in its finance organization. Chris Herbold, Senior Vice President of Finance and Chief Accounting Officer, will retire on August 31, 2026, after serving in key financial reporting and accounting roles. The company is promoting from within to fill the position.
Russ Montgomery, age 50, will step into the Chief Accounting Officer role effective September 1, 2026. Montgomery has spent his entire 24-year career at Plains, rising through accounting ranks from SEC reporting analyst in 2002 to Controller in 2010 and VP Controller in 2019.
His deep institutional knowledge and progression through operational accounting, SEC reporting, and controllership roles suggest strong preparation for the CAO position. For investors, the key watch item is continuity during the transition. While the internal promotion minimizes disruption risk, monitor the Q3 2026 earnings call and 10-Q filing for any changes in financial reporting quality or disclosure practices as Montgomery assumes his new responsibilities.
Section-by-Section Diff
Event · Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation
Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation filed; see Key Changes for terms.
Added in current filing · verify on EDGAR →
effective September 1, 2026, Russ Montgomery will be promoted to the position of Vice President, Accounting and Chief Accounting Officer of Plains All American GP LLC, the general partner of PAA, and PAA GP Holdings LLC, the general partner of PAGP.
Russ Montgomery, currently Vice President, Controller since 2019, will be promoted to Chief Accounting Officer effective September 1, 2026. This is an internal promotion of a 24-year company veteran who has held progressively senior accounting roles since joining in 2002.
Added in current filing · verify on EDGAR →
Mr. Montgomery, age 50, has served as Vice President, Controller of PAA since 2019. He previously served as Controller from 2010 to 2019, Director of Operational Accounting from 2008 to 2010, Manager of Crude Oil Accounting from 2005 to 2008 and SEC and Financial Reporting Senior Analyst from 2002 to 2005.
Russ Montgomery has extensive experience within PAA, having served in various accounting roles for 24 years including Controller positions since 2010. His background includes SEC and financial reporting responsibilities, operational accounting, and prior experience at Arthur Andersen LLP.
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Figures/quotes linked to EDGAR · Narrative written by AI · Jun 2, 2026 · How we verify