IRHYTHM TECHNOLOGIES INC

Ticker: IRTC CUSIP: 450056106 Class: EQTY

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q4 2025

Shares 718,797 Value ($000) $127,543 Avg Close $177.21 Range $155.00 - $212.00

Q3 2025

Shares 740,721 Value ($000) $127,397 Avg Close $158.94 Range $129.48 - $187.57

Q2 2025

Shares 739,331 Value ($000) $113,827 Avg Close $129.23 Range $92.52 - $157.13

Q1 2025

Shares 789,999 Value ($000) $82,697 Avg Close $105.91 Range $86.55 - $128.52

Q4 2024

Shares 604,737 Value ($000) $54,529 Avg Close $78.57 Range $55.92 - $92.38

Q3 2024

Shares 644,441 Value ($000) $47,843 Avg Close $79.65 Range $60.88 - $109.50

Q2 2024

Shares 799,080 Value ($000) $86,013 Avg Close $102.15 Range $82.60 - $118.43

Q1 2024

Shares 832,934 Value ($000) $96,620 Avg Close $112.42 Range $97.50 - $124.11

Q4 2023

Shares 805,092 Value ($000) $86,177 Avg Close $87.15 Range $70.24 - $110.48

Q3 2023

Shares 1,111,417 Value ($000) $104,762 Avg Close $101.67 Range $82.51 - $119.36

Q2 2023

Shares 1,042,434 Value ($000) $108,747 Avg Close $120.06 Range $93.54 - $140.23

Q1 2023

Shares 1,008,689 Value ($000) $125,108 Avg Close $108.45 Range $85.74 - $126.24

Q4 2022

Shares 912,952 Value ($000) $85,516 Avg Close $108.84 Range $88.73 - $138.38

Q3 2022

Shares 823,081 Value ($000) $103,116 Avg Close $144.39 Range $105.33 - $164.69

Q2 2022

Shares 678,396 Value ($000) $73,287 Avg Close $132.47 Range $103.03 - $169.54

Q1 2022

Shares 691,163 Value ($000) $108,837 Avg Close $128.41 Range $101.63 - $161.80

Q4 2021

Shares 755,055 Value ($000) $88,862 Avg Close $91.74 Range $56.52 - $127.61

Q3 2021

Shares 690,224 Value ($000) $40,420 Avg Close $52.99 Range $41.66 - $67.28

Q2 2021

Shares 634,684 Value ($000) $42,111 Avg Close $79.24 Range $59.64 - $144.69

Q1 2021

Shares 498,163 Value ($000) $69,175 Avg Close $179.22 Range $125.10 - $286.19

Q4 2020

Shares 212,608 Value ($000) $50,433 Avg Close $227.91 Range $179.01 - $274.21

Q3 2020

Shares 167,710 Value ($000) $39,933 Avg Close $176.91 Range $108.86 - $241.93

Q2 2020

Shares 185,330 Value ($000) $21,478 Avg Close $110.25 Range $70.63 - $136.55

Q1 2020

Shares 28,356 Value ($000) $2,307 Avg Close $82.93 Range $56.54 - $104.25

Q4 2019

Shares 4,542 Value ($000) $309 Avg Close $67.85 Range $56.24 - $75.39

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	718,797	$127,543	$177.21	$155.00 - $212.00
Q3 2025	740,721	$127,397	$158.94	$129.48 - $187.57
Q2 2025	739,331	$113,827	$129.23	$92.52 - $157.13
Q1 2025	789,999	$82,697	$105.91	$86.55 - $128.52
Q4 2024	604,737	$54,529	$78.57	$55.92 - $92.38
Q3 2024	644,441	$47,843	$79.65	$60.88 - $109.50
Q2 2024	799,080	$86,013	$102.15	$82.60 - $118.43
Q1 2024	832,934	$96,620	$112.42	$97.50 - $124.11
Q4 2023	805,092	$86,177	$87.15	$70.24 - $110.48
Q3 2023	1,111,417	$104,762	$101.67	$82.51 - $119.36
Q2 2023	1,042,434	$108,747	$120.06	$93.54 - $140.23
Q1 2023	1,008,689	$125,108	$108.45	$85.74 - $126.24
Q4 2022	912,952	$85,516	$108.84	$88.73 - $138.38
Q3 2022	823,081	$103,116	$144.39	$105.33 - $164.69
Q2 2022	678,396	$73,287	$132.47	$103.03 - $169.54
Q1 2022	691,163	$108,837	$128.41	$101.63 - $161.80
Q4 2021	755,055	$88,862	$91.74	$56.52 - $127.61
Q3 2021	690,224	$40,420	$52.99	$41.66 - $67.28
Q2 2021	634,684	$42,111	$79.24	$59.64 - $144.69
Q1 2021	498,163	$69,175	$179.22	$125.10 - $286.19
Q4 2020	212,608	$50,433	$227.91	$179.01 - $274.21
Q3 2020	167,710	$39,933	$176.91	$108.86 - $241.93
Q2 2020	185,330	$21,478	$110.25	$70.63 - $136.55
Q1 2020	28,356	$2,307	$82.93	$56.54 - $104.25
Q4 2019	4,542	$309	$67.85	$56.24 - $75.39