PDF SOLUTIONS INC

Ticker: PDFS CUSIP: 693282105 Class: Common Stock

NEEDHAM INVESTMENT MANAGEMENT LLC's Holding History (CIK: 0001167212)

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

Q4 2025

Shares 1,965,000 Value ($000) $56,061 Avg Close $27.67 Range $23.55 - $32.31

Q3 2025

Shares 2,018,550 Value ($000) $52,119 Avg Close $21.84 Range $18.12 - $26.59

Q2 2025

Shares 1,913,500 Value ($000) $40,911 Avg Close $18.93 Range $15.91 - $21.57

Q1 2025

Shares 1,865,000 Value ($000) $35,640 Avg Close $24.54 Range $18.50 - $29.50

Q4 2024

Shares 1,817,500 Value ($000) $49,218 Avg Close $30.15 Range $26.94 - $33.42

Q3 2024

Shares 1,759,550 Value ($000) $55,743 Avg Close $32.46 Range $27.69 - $39.70

Q2 2024

Shares 1,330,000 Value ($000) $48,385 Avg Close $33.44 Range $29.21 - $37.16

Q1 2024

Shares 1,120,000 Value ($000) $37,710 Avg Close $32.80 Range $28.99 - $35.89

Q4 2023

Shares 862,500 Value ($000) $27,721 Avg Close $30.32 Range $26.12 - $34.09

Q3 2023

Shares 697,500 Value ($000) $22,599 Avg Close $38.29 Range $30.80 - $48.02

Q2 2023

Shares 657,500 Value ($000) $29,653 Avg Close $40.80 Range $32.25 - $45.80

Q1 2023

Shares 634,500 Value ($000) $26,903 Avg Close $35.04 Range $27.23 - $42.50

Q4 2022

Shares 698,990 Value ($000) $19,935 Avg Close $27.01 Range $21.36 - $32.56

Q3 2022

Shares 790,000 Value ($000) $19,379 Avg Close $25.27 Range $20.16 - $30.31

Q2 2022

Shares 856,511 Value ($000) $18,423 Avg Close $23.11 Range $19.34 - $28.11

Q1 2022

Shares 867,331 Value ($000) $24,173 Avg Close $27.92 Range $23.73 - $32.80

Q4 2021

Shares 955,390 Value ($000) $30,372 Avg Close $27.81 Range $22.46 - $33.78

Q3 2021

Shares 1,264,000 Value ($000) $29,122 Avg Close $20.60 Range $17.29 - $24.20

Q2 2021

Shares 1,519,000 Value ($000) $27,616 Avg Close $17.92 Range $16.70 - $19.76

Q1 2021

Shares 1,314,000 Value ($000) $23,363 Avg Close $19.82 Range $16.44 - $23.50

Q4 2020

Shares 974,000 Value ($000) $21,038 Avg Close $20.99 Range $18.51 - $23.42

Q3 2020

Shares 966,000 Value ($000) $18,074 Avg Close $20.60 Range $18.18 - $26.42

Q2 2020

Shares 1,039,000 Value ($000) $20,324 Avg Close $16.25 Range $11.05 - $19.64

Q1 2020

Shares 1,274,615 Value ($000) $14,938 Avg Close $14.77 Range $8.61 - $18.41

Q4 2019

Shares 1,161,815 Value ($000) $19,623 Avg Close $15.34 Range $12.53 - $17.42

Q3 2019

Shares 1,303,200 Value ($000) $17,033 Avg Close $12.62 Range $11.16 - $13.84

Q2 2019

Shares 1,316,100 Value ($000) $17,268 Avg Close $12.83 Range $11.77 - $14.00

Q1 2019

Shares 1,300,100 Value ($000) $16,056 Avg Close $11.05 Range $8.24 - $13.53

Q4 2018

Shares 1,300,100 Value ($000) $10,960 Avg Close $8.48 Range $7.56 - $9.45

Q3 2018

Shares 1,216,000 Value ($000) $10,980 Avg Close $10.06 Range $8.10 - $12.66

Q2 2018

Shares 962,500 Value ($000) $11,531 Avg Close $11.94 Range $9.62 - $13.84

Q1 2018

Shares 1,032,500 Value ($000) $12,038 Avg Close $13.29 Range $11.07 - $16.76

Q4 2017

Shares 972,500 Value ($000) $15,268 Avg Close $16.06 Range $14.12 - $18.48

Q3 2017

Shares 942,900 Value ($000) $14,606 Avg Close $16.12 Range $14.11 - $20.10

Q2 2017

Shares 745,000 Value ($000) $12,256 Avg Close $18.56 Range $16.07 - $23.93

Q1 2017

Shares 662,950 Value ($000) $14,996 Avg Close $22.28 Range $21.03 - $23.40

Q4 2016

Shares 662,950 Value ($000) $14,950 Avg Close $20.91 Range $17.45 - $24.44

Q3 2016

Shares 667,500 Value ($000) $12,128 Avg Close $16.29 Range $13.48 - $18.18

Q2 2016

Shares 640,000 Value ($000) $8,954 Avg Close $13.59 Range $12.09 - $15.25

Q1 2016

Shares 630,000 Value ($000) $8,429 Avg Close $10.95 Range $8.70 - $14.73

Q4 2015

Shares 588,500 Value ($000) $6,379 Avg Close $10.84 Range $9.68 - $11.76

Q3 2015

Shares 607,500 Value ($000) $6,076 Avg Close $12.57 Range $9.91 - $16.45

Q2 2015

Shares 544,250 Value ($000) $8,708 Avg Close $17.19 Range $14.76 - $19.52

Q1 2015

Shares 527,500 Value ($000) $9,453 Avg Close $17.39 Range $13.31 - $18.80

Q4 2014

Shares 517,500 Value ($000) $7,690 Avg Close $13.09 Range $11.62 - $15.24

Q3 2014

Shares 472,500 Value ($000) $5,958 Avg Close $19.84 Range $12.26 - $22.66

Q2 2014

Shares 510,500 Value ($000) $10,833 Avg Close $19.12 Range $16.60 - $21.77

Q1 2014

Shares 552,500 Value ($000) $10,039 Avg Close $22.07 Range $17.21 - $26.73

Q4 2013

Shares 585,000 Value ($000) $14,988 Avg Close $22.99 Range $20.12 - $25.90

Q3 2013

Shares 585,000 Value ($000) $12,419 Avg Close $20.57 Range $18.09 - $22.20

Q2 2013

Shares 710,000 Value ($000) $13,086 Avg Close $17.41 Range $14.95 - $19.03

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,965,000	$56,061	$27.67	$23.55 - $32.31
Q3 2025	2,018,550	$52,119	$21.84	$18.12 - $26.59
Q2 2025	1,913,500	$40,911	$18.93	$15.91 - $21.57
Q1 2025	1,865,000	$35,640	$24.54	$18.50 - $29.50
Q4 2024	1,817,500	$49,218	$30.15	$26.94 - $33.42
Q3 2024	1,759,550	$55,743	$32.46	$27.69 - $39.70
Q2 2024	1,330,000	$48,385	$33.44	$29.21 - $37.16
Q1 2024	1,120,000	$37,710	$32.80	$28.99 - $35.89
Q4 2023	862,500	$27,721	$30.32	$26.12 - $34.09
Q3 2023	697,500	$22,599	$38.29	$30.80 - $48.02
Q2 2023	657,500	$29,653	$40.80	$32.25 - $45.80
Q1 2023	634,500	$26,903	$35.04	$27.23 - $42.50
Q4 2022	698,990	$19,935	$27.01	$21.36 - $32.56
Q3 2022	790,000	$19,379	$25.27	$20.16 - $30.31
Q2 2022	856,511	$18,423	$23.11	$19.34 - $28.11
Q1 2022	867,331	$24,173	$27.92	$23.73 - $32.80
Q4 2021	955,390	$30,372	$27.81	$22.46 - $33.78
Q3 2021	1,264,000	$29,122	$20.60	$17.29 - $24.20
Q2 2021	1,519,000	$27,616	$17.92	$16.70 - $19.76
Q1 2021	1,314,000	$23,363	$19.82	$16.44 - $23.50
Q4 2020	974,000	$21,038	$20.99	$18.51 - $23.42
Q3 2020	966,000	$18,074	$20.60	$18.18 - $26.42
Q2 2020	1,039,000	$20,324	$16.25	$11.05 - $19.64
Q1 2020	1,274,615	$14,938	$14.77	$8.61 - $18.41
Q4 2019	1,161,815	$19,623	$15.34	$12.53 - $17.42
Q3 2019	1,303,200	$17,033	$12.62	$11.16 - $13.84
Q2 2019	1,316,100	$17,268	$12.83	$11.77 - $14.00
Q1 2019	1,300,100	$16,056	$11.05	$8.24 - $13.53
Q4 2018	1,300,100	$10,960	$8.48	$7.56 - $9.45
Q3 2018	1,216,000	$10,980	$10.06	$8.10 - $12.66
Q2 2018	962,500	$11,531	$11.94	$9.62 - $13.84
Q1 2018	1,032,500	$12,038	$13.29	$11.07 - $16.76
Q4 2017	972,500	$15,268	$16.06	$14.12 - $18.48
Q3 2017	942,900	$14,606	$16.12	$14.11 - $20.10
Q2 2017	745,000	$12,256	$18.56	$16.07 - $23.93
Q1 2017	662,950	$14,996	$22.28	$21.03 - $23.40
Q4 2016	662,950	$14,950	$20.91	$17.45 - $24.44
Q3 2016	667,500	$12,128	$16.29	$13.48 - $18.18
Q2 2016	640,000	$8,954	$13.59	$12.09 - $15.25
Q1 2016	630,000	$8,429	$10.95	$8.70 - $14.73
Q4 2015	588,500	$6,379	$10.84	$9.68 - $11.76
Q3 2015	607,500	$6,076	$12.57	$9.91 - $16.45
Q2 2015	544,250	$8,708	$17.19	$14.76 - $19.52
Q1 2015	527,500	$9,453	$17.39	$13.31 - $18.80
Q4 2014	517,500	$7,690	$13.09	$11.62 - $15.24
Q3 2014	472,500	$5,958	$19.84	$12.26 - $22.66
Q2 2014	510,500	$10,833	$19.12	$16.60 - $21.77
Q1 2014	552,500	$10,039	$22.07	$17.21 - $26.73
Q4 2013	585,000	$14,988	$22.99	$20.12 - $25.90
Q3 2013	585,000	$12,419	$20.57	$18.09 - $22.20
Q2 2013	710,000	$13,086	$17.41	$14.95 - $19.03