PINNACLE WEST CAP CORP

Ticker: PNW CUSIP: 723484101 Class: COM

Zimmer Partners, LP's Holding History (CIK: 0001565854)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 136,455 Value ($000) $12,104 Avg Close $89.23 Range $86.18 - $93.48

Q3 2025

Shares 148,632 Value ($000) $13,326 Avg Close $88.79 Range $84.44 - $93.47

Q2 2025

Shares 500,000 Value ($000) $44,735 Avg Close $89.32 Range $84.01 - $93.67

Q1 2025

Shares 50,000 Value ($000) $4,763 Avg Close $86.37 Range $78.26 - $93.02

Q3 2024

Shares 2,899,676 Value ($000) $256,882 Avg Close $80.90 Range $70.66 - $87.05

Q2 2024

Shares 2,744,210 Value ($000) $209,603 Avg Close $70.74 Range $65.76 - $74.22

Q1 2024

Shares 2,655,010 Value ($000) $198,409 Avg Close $65.20 Range $60.62 - $69.54

Q2 2023

Shares 91,000 Value ($000) $7,413 Avg Close $71.39 Range $67.35 - $75.96

Q4 2022

Shares 719,383 Value ($000) $54,702 Avg Close $62.50 Range $51.16 - $70.75

Q3 2022

Shares 1,227,500 Value ($000) $79,186 Avg Close $63.64 Range $55.76 - $68.03

Q2 2022

Shares 200,000 Value ($000) $14,624 Avg Close $63.84 Range $55.80 - $68.19

Q4 2020

Shares 833,004 Value ($000) $66,599 Avg Close $65.83 Range $58.83 - $73.60

Q3 2020

Shares 920,000 Value ($000) $68,586 Avg Close $60.54 Range $54.95 - $66.17

Q2 2020

Shares 3,083,470 Value ($000) $225,988 Avg Close $59.12 Range $52.33 - $65.86

Q1 2020

Shares 2,412,563 Value ($000) $182,848 Avg Close $70.35 Range $46.70 - $82.05

Q4 2019

Shares 875,000 Value ($000) $78,689 Avg Close $69.39 Range $65.00 - $74.61

Q3 2019

Shares 41,800 Value ($000) $4,058 Avg Close $71.87 Range $68.70 - $75.42

Q4 2018

Shares 65,700 Value ($000) $5,598 Avg Close $64.12 Range $57.80 - $69.17

Q3 2018

Shares 124,400 Value ($000) $9,850 Avg Close $59.27 Range $56.90 - $61.30

Q2 2018

Shares 674,400 Value ($000) $54,330 Avg Close $57.22 Range $53.85 - $59.87

Q1 2018

Shares 374,400 Value ($000) $29,877 Avg Close $56.89 Range $53.69 - $61.68

Q4 2017

Shares 312,500 Value ($000) $26,619 Avg Close $63.49 Range $60.19 - $66.68

Q3 2016

Shares 75,000 Value ($000) $5,699 Avg Close $53.79 Range $51.20 - $56.86

Q3 2015

Shares 346,600 Value ($000) $22,231 Avg Close $40.69 Range $37.54 - $43.56

Q2 2015

Shares 74,800 Value ($000) $4,255 Avg Close $39.75 Range $37.04 - $42.55

Q2 2013

Shares 375,000 Value ($000) $20,801 Avg Close $35.40 Range $31.53 - $37.84

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	136,455	$12,104	$89.23	$86.18 - $93.48
Q3 2025	148,632	$13,326	$88.79	$84.44 - $93.47
Q2 2025	500,000	$44,735	$89.32	$84.01 - $93.67
Q1 2025	50,000	$4,763	$86.37	$78.26 - $93.02
Q3 2024	2,899,676	$256,882	$80.90	$70.66 - $87.05
Q2 2024	2,744,210	$209,603	$70.74	$65.76 - $74.22
Q1 2024	2,655,010	$198,409	$65.20	$60.62 - $69.54
Q2 2023	91,000	$7,413	$71.39	$67.35 - $75.96
Q4 2022	719,383	$54,702	$62.50	$51.16 - $70.75
Q3 2022	1,227,500	$79,186	$63.64	$55.76 - $68.03
Q2 2022	200,000	$14,624	$63.84	$55.80 - $68.19
Q4 2020	833,004	$66,599	$65.83	$58.83 - $73.60
Q3 2020	920,000	$68,586	$60.54	$54.95 - $66.17
Q2 2020	3,083,470	$225,988	$59.12	$52.33 - $65.86
Q1 2020	2,412,563	$182,848	$70.35	$46.70 - $82.05
Q4 2019	875,000	$78,689	$69.39	$65.00 - $74.61
Q3 2019	41,800	$4,058	$71.87	$68.70 - $75.42
Q4 2018	65,700	$5,598	$64.12	$57.80 - $69.17
Q3 2018	124,400	$9,850	$59.27	$56.90 - $61.30
Q2 2018	674,400	$54,330	$57.22	$53.85 - $59.87
Q1 2018	374,400	$29,877	$56.89	$53.69 - $61.68
Q4 2017	312,500	$26,619	$63.49	$60.19 - $66.68
Q3 2016	75,000	$5,699	$53.79	$51.20 - $56.86
Q3 2015	346,600	$22,231	$40.69	$37.54 - $43.56
Q2 2015	74,800	$4,255	$39.75	$37.04 - $42.55
Q2 2013	375,000	$20,801	$35.40	$31.53 - $37.84