Security Snapshot

CASELLA WASTE SYSTEMS INC - Class A Stock (CWST) Institutional Ownership

CUSIP: 147448104

13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

390

Shares (Excl. Options)

77,460,226

Price

$97.94

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Type / Class
Equity / Class A Stock
Symbol
CWST on Nasdaq
Shares outstanding
62,438,678
Price per share
$79.34
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
77,460,226
Total reported value
$7,587,923,428
% of total 13F portfolios
0.01%
Share change
+9,813,507
Value change
+$968,360,896
Number of holders
390
Price from insider filings
$79.34
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Quick Takeaways

  • CWST - CASELLA WASTE SYSTEMS INC - Class A Stock is tracked under CUSIP 147448104.
  • 390 institutions reported positions in Q4 2025.
  • 4 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 390 to 38 between Q4 2025 and Q1 2026.
  • Reported value moved from $7,587,923,428 to $35,964,764.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 390 institutions filings for Q4 2025.

Open SEC Evidence

Investment Quick Answers

What is CUSIP 147448104?
CUSIP 147448104 identifies CWST - CASELLA WASTE SYSTEMS INC - Class A Stock in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of CASELLA WASTE SYSTEMS INC - Class A Stock (CWST) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 14% $874,479,914 8,928,731 BlackRock, Inc. 31 Dec 2025
VANGUARD GROUP INC 11% $643,945,020 6,574,893 The Vanguard Group 31 Dec 2025
Conestoga Capital Advisors, LLC 5.5% $396,150,082 3,432,843 Conestoga Capital Advisors 31 Dec 2024
WASATCH ADVISORS LP 5.5% $379,086,865 3,412,123 WASATCH ADVISORS LP 30 Jun 2025

As of 31 Dec 2025, 390 institutional investors reported holding 77,460,226 shares of CASELLA WASTE SYSTEMS INC - Class A Stock (CWST). This represents 124% of the company’s total 62,438,678 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of CASELLA WASTE SYSTEMS INC - Class A Stock (CWST) together control 84% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 15% 9,057,647 +98% 0.02% $887,105,957
VANGUARD GROUP INC 11% 6,574,893 +9.7% 0.01% $643,945,020
WASATCH ADVISORS LP 6% 3,765,442 +1.5% 2.2% $368,787,389
Conestoga Capital Advisors, LLC 4.4% 2,777,327 -3.4% 4.6% $272,011,406
Invesco Ltd. 4.3% 2,703,855 +12% 0.04% $264,815,560
Capital Research Global Investors 4% 2,488,034 +24% 0.04% $243,678,050
STATE STREET CORP 3.7% 2,306,780 +61% 0.01% $225,926,033
Capital International Investors 3.2% 1,998,409 +2.1% 0.03% $195,724,177
T. Rowe Price Investment Management, Inc. 2.7% 1,707,723 +0.03% 0.11% $167,255,000
WESTFIELD CAPITAL MANAGEMENT CO LP 2.7% 1,665,226 +1.1% 0.68% $163,092,234
GEODE CAPITAL MANAGEMENT, LLC 2.5% 1,538,803 +0.36% 0.01% $150,732,667
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 2.4% 1,468,206 -19% 0.4% $143,796,096
JPMORGAN CHASE & CO 2.3% 1,462,770 -12% 0.01% $143,263,695
MORGAN STANLEY 2.2% 1,362,853 +62% 0.01% $133,478,072
SILVERCREST ASSET MANAGEMENT GROUP LLC 2.2% 1,348,555 +8.6% 0.91% $132,077,918
WELLINGTON MANAGEMENT GROUP LLP 2.1% 1,307,249 -6% 0.02% $128,031,967
GENEVA CAPITAL MANAGEMENT LLC 2% 1,265,324 +0.71% 2.3% $123,925,878
EARNEST PARTNERS LLC 1.9% 1,162,557 -2.7% 0.49% $113,860,833
NEUBERGER BERMAN GROUP LLC 1.7% 1,045,409 +12% 0.08% $102,387,358
DIMENSIONAL FUND ADVISORS LP 1.7% 1,035,661 +8.9% 0.02% $101,444,211
Pictet Asset Management Holding SA 1.6% 990,651 +10866% 0.09% $97,039,592
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 1.5% 943,149 0% 0.14% $92,372,000
GOLDMAN SACHS GROUP INC 1.4% 899,385 +1.4% 0.01% $88,085,767
UBS Group AG 1.3% 841,897 +653% 0.02% $82,455,393
AMERIPRISE FINANCIAL INC 1.2% 764,056 -28% 0.02% $74,838,990

Institutional Holders of CASELLA WASTE SYSTEMS INC - Class A Stock (CWST) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 449,270 $35,964,764 +$20,251,252 $79.34 38
2025 Q4 77,460,226 $7,587,923,428 +$968,360,896 $97.94 390
2025 Q3 66,377,932 $6,294,041,340 +$73,532,668 $94.88 386
2025 Q2 65,438,323 $7,549,760,585 +$65,833,549 $115.38 387
2025 Q1 64,738,257 $7,219,647,011 +$4,577,568 $111.51 367
2024 Q4 65,127,232 $6,889,761,758 +$120,091,578 $105.81 342
2024 Q3 64,015,497 $6,371,276,477 +$403,630,244 $99.49 342
2024 Q2 59,431,643 $5,897,740,159 +$129,539,608 $99.22 310
2024 Q1 58,315,369 $5,765,883,359 +$101,656,355 $98.87 308
2023 Q4 57,556,798 $4,920,281,685 +$11,630,175 $85.46 307
2023 Q3 57,443,474 $4,383,109,169 +$114,397,223 $76.30 296
2023 Q2 55,773,711 $5,043,757,708 +$464,661,179 $90.45 315
2023 Q1 50,655,221 $4,186,998,515 +$61,650,233 $82.66 262
2022 Q4 50,385,224 $3,996,098,320 -$34,288,702 $79.31 269
2022 Q3 50,812,708 $3,881,940,157 +$20,432,104 $76.39 273
2022 Q2 50,187,812 $3,647,952,594 +$52,994,788 $72.68 258
2022 Q1 49,583,078 $4,345,553,496 +$85,127,456 $87.65 265
2021 Q4 48,690,713 $4,154,272,154 -$326,784,571 $85.42 274
2021 Q3 50,052,773 $3,802,867,611 +$65,807,840 $75.94 230
2021 Q2 49,240,434 $3,124,710,856 +$33,972,996 $63.43 229
2021 Q1 48,700,728 $3,097,445,679 +$16,882,308 $63.57 214
2020 Q4 48,606,061 $3,010,613,615 +$170,675,439 $61.95 217
2020 Q3 45,834,847 $2,560,435,065 +$8,978,057 $55.85 198
2020 Q2 45,720,261 $2,382,751,697 +$20,650,311 $52.12 184
2020 Q1 45,514,290 $1,778,109,952 +$40,471,376 $39.06 177
2019 Q4 44,202,861 $2,034,920,566 +$15,043,541 $46.03 174
2019 Q3 44,047,616 $1,891,343,852 +$90,989,395 $42.94 180
2019 Q2 42,331,537 $1,677,585,730 +$51,042,567 $39.63 173
2019 Q1 42,062,417 $1,495,619,201 +$195,288,205 $35.56 169
2018 Q4 36,699,498 $1,042,048,756 -$504,622 $28.49 163
2018 Q3 36,743,937 $1,140,503,019 +$13,343,132 $31.06 156
2018 Q2 36,178,236 $925,517,871 +$23,065,070 $25.61 150
2018 Q1 35,465,562 $829,180,407 +$26,838,905 $23.38 147
2017 Q4 34,338,197 $790,314,356 +$33,512,818 $23.02 142
2017 Q3 33,339,498 $626,728,588 +$17,929,859 $18.80 133
2017 Q2 32,529,465 $533,808,685 +$17,941,019 $16.41 142
2017 Q1 31,507,257 $444,561,554 +$55,126,421 $14.11 137
2016 Q4 30,672,677 $380,639,791 +$11,620,537 $12.41 132
2016 Q3 29,445,167 $303,284,624 +$23,413,954 $10.30 115
2016 Q2 27,209,563 $213,590,081 +$2,889,184 $7.85 101
2016 Q1 26,788,589 $180,327,975 +$2,194,113 $6.70 93
2015 Q4 26,495,429 $158,441,682 -$1,761,315 $5.98 92
2015 Q3 26,790,773 $155,407,819 +$5,562,976 $5.80 95
2015 Q2 25,833,609 $144,922,046 -$16,385,413 $5.61 89
2015 Q1 28,592,812 $157,259,140 -$6,770,107 $5.50 87
2014 Q4 30,212,040 $122,007,375 +$2,320,906 $4.04 89
2014 Q3 29,516,642 $113,640,249 -$345,939 $3.85 84
2014 Q2 29,394,709 $147,277,163 +$4,384,407 $5.01 93
2014 Q1 28,512,983 $145,691,255 +$1,471,712 $5.11 84