PFIZER INC

Ticker: PFE CUSIP: 717081103 Class: COM

Chesley Taft & Associates LLC's Holding History (CIK: 0001164632)

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

Q4 2025

Shares 208,557 Value ($000) $5,193 Avg Close $25.03 Range $23.73 - $27.21

Q3 2025

Shares 147,601 Value ($000) $3,761 Avg Close $24.14 Range $22.71 - $25.66

Q2 2025

Shares 148,044 Value ($000) $3,589 Avg Close $22.35 Range $19.83 - $24.10

Q1 2025

Shares 150,137 Value ($000) $3,804 Avg Close $24.71 Range $23.33 - $25.82

Q4 2024

Shares 152,440 Value ($000) $4,044 Avg Close $25.12 Range $22.83 - $27.94

Q3 2024

Shares 148,607 Value ($000) $4,301 Avg Close $26.68 Range $24.72 - $28.96

Q2 2024

Shares 150,783 Value ($000) $4,219 Avg Close $24.77 Range $22.48 - $26.92

Q1 2024

Shares 151,226 Value ($000) $4,197 Avg Close $24.65 Range $22.84 - $26.61

Q4 2023

Shares 155,451 Value ($000) $4,475 Avg Close $26.40 Range $22.64 - $29.58

Q3 2023

Shares 154,932 Value ($000) $5,139 Avg Close $30.57 Range $27.55 - $32.42

Q2 2023

Shares 177,710 Value ($000) $6,518 Avg Close $33.22 Range $30.67 - $35.82

Q1 2023

Shares 180,780 Value ($000) $7,376 Avg Close $36.55 Range $33.28 - $43.38

Q4 2022

Shares 183,491 Value ($000) $9,402 Avg Close $40.19 Range $34.55 - $46.18

Q3 2022

Shares 183,855 Value ($000) $8,045 Avg Close $40.41 Range $36.27 - $44.60

Q2 2022

Shares 186,399 Value ($000) $9,773 Avg Close $42.00 Range $38.28 - $46.21

Q1 2022

Shares 186,556 Value ($000) $9,908 Avg Close $42.47 Range $37.25 - $47.67

Q4 2021

Shares 185,394 Value ($000) $10,948 Avg Close $40.23 Range $33.04 - $50.25

Q3 2021

Shares 182,906 Value ($000) $7,867 Avg Close $35.67 Range $31.14 - $41.86

Q2 2021

Shares 180,396 Value ($000) $7,064 Avg Close $30.99 Range $28.33 - $32.57

Q1 2021

Shares 178,976 Value ($000) $6,493 Avg Close $28.04 Range $26.42 - $29.64

Q4 2020

Shares 175,228 Value ($000) $6,450 Avg Close $28.63 Range $25.46 - $33.76

Q3 2020

Shares 175,723 Value ($000) $6,449 Avg Close $27.11 Range $24.12 - $28.77

Q2 2020

Shares 178,444 Value ($000) $5,835 Avg Close $25.99 Range $22.75 - $28.30

Q1 2020

Shares 180,249 Value ($000) $5,883 Avg Close $25.83 Range $20.12 - $29.26

Q4 2019

Shares 182,054 Value ($000) $7,133 Avg Close $26.71 Range $24.48 - $28.30

Q3 2019

Shares 182,672 Value ($000) $6,563 Avg Close $27.02 Range $24.03 - $31.23

Q2 2019

Shares 185,187 Value ($000) $8,022 Avg Close $29.22 Range $26.69 - $31.04

Q1 2019

Shares 211,206 Value ($000) $8,970 Avg Close $29.24 Range $27.18 - $30.42

Q4 2018

Shares 215,495 Value ($000) $9,406 Avg Close $30.03 Range $27.84 - $32.00

Q3 2018

Shares 221,642 Value ($000) $9,768 Avg Close $27.65 Range $24.39 - $30.38

Q2 2018

Shares 221,682 Value ($000) $8,043 Avg Close $24.30 Range $23.06 - $25.01

Q1 2018

Shares 220,250 Value ($000) $7,817 Avg Close $24.24 Range $22.28 - $26.22

Q4 2017

Shares 220,989 Value ($000) $8,004 Avg Close $23.80 Range $22.47 - $24.83

Q3 2017

Shares 225,539 Value ($000) $8,052 Avg Close $22.25 Range $21.30 - $23.86

Q2 2017

Shares 232,875 Value ($000) $7,822 Avg Close $21.60 Range $20.67 - $22.50

Q1 2017

Shares 283,143 Value ($000) $9,686 Avg Close $21.41 Range $19.77 - $22.46

Q4 2016

Shares 292,895 Value ($000) $9,513 Avg Close $20.50 Range $18.90 - $21.64

Q3 2016

Shares 294,621 Value ($000) $9,979 Avg Close $22.26 Range $21.09 - $23.49

Q2 2016

Shares 290,404 Value ($000) $10,225 Avg Close $21.05 Range $18.31 - $22.30

Q1 2016

Shares 290,033 Value ($000) $8,597 Avg Close $18.68 Range $17.59 - $19.87

Q4 2015

Shares 289,212 Value ($000) $9,336 Avg Close $20.38 Range $19.02 - $22.06

Q3 2015

Shares 298,803 Value ($000) $9,385 Avg Close $20.60 Range $17.41 - $22.12

Q2 2015

Shares 302,101 Value ($000) $10,129 Avg Close $20.78 Range $20.15 - $21.38

Q1 2015

Shares 305,550 Value ($000) $10,630 Avg Close $20.10 Range $18.50 - $21.33

Q4 2014

Shares 305,446 Value ($000) $9,515 Avg Close $17.97 Range $16.27 - $19.76

Q3 2014

Shares 305,752 Value ($000) $9,041 Avg Close $17.45 Range $16.48 - $18.35

Q2 2014

Shares 307,326 Value ($000) $9,121 Avg Close $17.55 Range $16.87 - $18.99

Q1 2014

Shares 313,562 Value ($000) $10,072 Avg Close $18.20 Range $17.09 - $19.15

Q4 2013

Shares 312,036 Value ($000) $9,558 Avg Close $17.62 Range $16.02 - $18.73

Q3 2013

Shares 308,548 Value ($000) $8,863 Avg Close $16.36 Range $15.50 - $17.26

Q2 2013

Shares 314,664 Value ($000) $8,814 Avg Close $16.46 Range $15.38 - $17.52

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	208,557	$5,193	$25.03	$23.73 - $27.21
Q3 2025	147,601	$3,761	$24.14	$22.71 - $25.66
Q2 2025	148,044	$3,589	$22.35	$19.83 - $24.10
Q1 2025	150,137	$3,804	$24.71	$23.33 - $25.82
Q4 2024	152,440	$4,044	$25.12	$22.83 - $27.94
Q3 2024	148,607	$4,301	$26.68	$24.72 - $28.96
Q2 2024	150,783	$4,219	$24.77	$22.48 - $26.92
Q1 2024	151,226	$4,197	$24.65	$22.84 - $26.61
Q4 2023	155,451	$4,475	$26.40	$22.64 - $29.58
Q3 2023	154,932	$5,139	$30.57	$27.55 - $32.42
Q2 2023	177,710	$6,518	$33.22	$30.67 - $35.82
Q1 2023	180,780	$7,376	$36.55	$33.28 - $43.38
Q4 2022	183,491	$9,402	$40.19	$34.55 - $46.18
Q3 2022	183,855	$8,045	$40.41	$36.27 - $44.60
Q2 2022	186,399	$9,773	$42.00	$38.28 - $46.21
Q1 2022	186,556	$9,908	$42.47	$37.25 - $47.67
Q4 2021	185,394	$10,948	$40.23	$33.04 - $50.25
Q3 2021	182,906	$7,867	$35.67	$31.14 - $41.86
Q2 2021	180,396	$7,064	$30.99	$28.33 - $32.57
Q1 2021	178,976	$6,493	$28.04	$26.42 - $29.64
Q4 2020	175,228	$6,450	$28.63	$25.46 - $33.76
Q3 2020	175,723	$6,449	$27.11	$24.12 - $28.77
Q2 2020	178,444	$5,835	$25.99	$22.75 - $28.30
Q1 2020	180,249	$5,883	$25.83	$20.12 - $29.26
Q4 2019	182,054	$7,133	$26.71	$24.48 - $28.30
Q3 2019	182,672	$6,563	$27.02	$24.03 - $31.23
Q2 2019	185,187	$8,022	$29.22	$26.69 - $31.04
Q1 2019	211,206	$8,970	$29.24	$27.18 - $30.42
Q4 2018	215,495	$9,406	$30.03	$27.84 - $32.00
Q3 2018	221,642	$9,768	$27.65	$24.39 - $30.38
Q2 2018	221,682	$8,043	$24.30	$23.06 - $25.01
Q1 2018	220,250	$7,817	$24.24	$22.28 - $26.22
Q4 2017	220,989	$8,004	$23.80	$22.47 - $24.83
Q3 2017	225,539	$8,052	$22.25	$21.30 - $23.86
Q2 2017	232,875	$7,822	$21.60	$20.67 - $22.50
Q1 2017	283,143	$9,686	$21.41	$19.77 - $22.46
Q4 2016	292,895	$9,513	$20.50	$18.90 - $21.64
Q3 2016	294,621	$9,979	$22.26	$21.09 - $23.49
Q2 2016	290,404	$10,225	$21.05	$18.31 - $22.30
Q1 2016	290,033	$8,597	$18.68	$17.59 - $19.87
Q4 2015	289,212	$9,336	$20.38	$19.02 - $22.06
Q3 2015	298,803	$9,385	$20.60	$17.41 - $22.12
Q2 2015	302,101	$10,129	$20.78	$20.15 - $21.38
Q1 2015	305,550	$10,630	$20.10	$18.50 - $21.33
Q4 2014	305,446	$9,515	$17.97	$16.27 - $19.76
Q3 2014	305,752	$9,041	$17.45	$16.48 - $18.35
Q2 2014	307,326	$9,121	$17.55	$16.87 - $18.99
Q1 2014	313,562	$10,072	$18.20	$17.09 - $19.15
Q4 2013	312,036	$9,558	$17.62	$16.02 - $18.73
Q3 2013	308,548	$8,863	$16.36	$15.50 - $17.26
Q2 2013	314,664	$8,814	$16.46	$15.38 - $17.52