$PAGP

PLAINS GP HOLDINGS LP (PAGP) filed an SEC Form 8-K — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers. Exhibit 99.1 Plains All American Pipeline and Plains GP Holdings Announce Appointment of New Chief Operating Officer HOUSTON – [September 29, 2026] – Plains All American Pipeline, L.P. (Nasdaq: PAA ) and Plains GP Holdings (Nasdaq: PAGP ) (collectively, “Plains”) announced that D

Plains All American Pipeline (PAA) and Plains GP Holdings (PAGP) appointed Dean Liollio as EVP and COO, effective October 2, 2026. He replaces Chris Chandler, who is resigning. Liollio previously held senior roles within Plains and other energy companies. The company praised Liollio's qualifications and thanked Chandler for his contributions.

Plains All American Pipeline (PAA) and Plains GP Holdings (PAGP) will acquire Powder River Basin assets from Silver Creek Midstream for $585 million. Latham & Watkins LLP advised on the deal, covering various legal aspects.

Citigroup maintained a Neutral rating for Plains GP Holdings (PAGP) but raised its price target from $23.00 to $27.00, citing a positive outlook. The stock is currently trading at $27.65, which is 18.4% over its GF Value™ of $23.35. PAGP has a GF Score™ of 78/100, indicating strong performance relative to peers, with notable strengths in profitability and growth.

Plains All American Pipeline, L.P. (PAA) and Plains GP Holdings (PAGP) announced a $585 million acquisition of Silver Creek Midstream's Powder River Basin assets. The deal includes 600 miles of pipelines, 350,000 barrels per day of capacity, and 1.2 million barrels of storage. The acquisition is expected to close in Q4 2026, subject to regulatory approvals.

PLAINS GP HOLDINGS LP (PAGP) filed an SEC Form 8-K — Results of Operations and Financial Condition. Exhibit 99.1 PLAINS GP HOLDINGS, L.P. AND SUBSIDIARIES UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL INFORMATION On November 6, 2025, Plains GP Holdings, L.P. (“PAGP”, “we”, “us”, “our”, or the “Company”) filed a Current Report on Form 8-K, as amended on a Form 8-K/A filed on

Plains GP Holdings LP (PAGP) reported Q2 2026 EBITDA of $690 million and said full-year 2026 EBITDA guidance remains unchanged, with the midpoint for the second half in the low $700 million range. Management cited $14 million in one-off environmental remediation costs, $40 million NGL adjusted EBITDA after a mid-May sale, and $50 million cost efficiencies targets for 2026 and 2027.

PLAINS GP HOLDINGS LP (PAGP) filed an SEC Form 8-K — Completion of Acquisition or Disposition of Assets. Exhibit 99.1 Plains All American Reports Second-Quarter 2026 Results Houston, TX – August 7, 2026 – Plains All American Pipeline, L.P. (Nasdaq: PAA) and Plains GP Holdings (Nasdaq: PAGP) today reported second-quarter 2026 results and provided the following highlights: Second-Quar

Plains All American Pipeline (PAA) and Plains GP Holdings (PAGP) reported Q2 2026 results. PAA net income attributable to PAA was $1.830B, including about $1.6B from the Canadian NGL divestiture, and Adjusted EBITDA attributable to PAA was $738M. Pro forma leverage was 3.3x after ~$2.9B debt reduction. They paid a $0.4175/unit quarterly distribution and raised 2026 organic growth capex to $400-$450M.

Plains All American Pipeline (PAA) and Plains GP Holdings (PAGP) declared Q2 2026 cash distributions payable Aug. 14, 2026 to holders of record July 31. PAA common and PAGP Class A: $0.4175/unit/share; PAA Series A preferred: $0.61524/unit; PAA Series B preferred: $20.50/unit (floating). Q2 2026 earnings are set for Aug. 7, 2026 before market open.