Casella Waste Systems, Inc.
US ˙ NasdaqGS ˙ US1474481041

SecurityCWST / Casella Waste Systems, Inc.
InstitutionState Street Corp
Latest Disclosed Ownership2,389,197 shares
Latest Disclosed Value $ 189,558,890
State Street Corp reports 3.57% increase in ownership of CWST / Casella Waste Systems, Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 2,389,197 shares of Casella Waste Systems, Inc. (US:CWST) valued at $189,558,890 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,306,780 shares of Casella Waste Systems, Inc.. This represents a change in shares of 3.57% during the quarter. The current value of the position is $199,856,329 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F CASELLA WASTE SYS CL A 147448104 2,389,197 82,417 3.57 189,559 -16.10 0.0065
2026-02-13 2025-12-31 13F CASELLA WASTE SYS CL A 147448104 2,306,780 871,761 60.75 225,926 65.93 0.0076
2025-11-14 2025-09-30 13F CASELLA WASTE SYS CL A 147448104 1,435,019 2,136 0.15 136,155 -17.65 0.0047
2025-08-14 2025-06-30 13F CASELLA WASTE SYS CL A 147448104 1,432,883 -4,029 -0.28 165,326 3.18 0.0062
2025-05-15 2025-03-31 13F CASELLA WASTE SYS CL A 147448104 1,436,912 -45,063 -3.04 160,230 2.18 0.0066
2025-02-14 2024-12-31 13F CASELLA WASTE SYS CL A 147448104 1,481,975 94,313 6.80 156,808 13.58 0.0062
2024-11-14 2024-09-30 13F CASELLA WASTE SYS CL A 147448104 1,387,662 75,352 5.74 138,058 6.03 0.0056
2024-08-14 2024-06-30 13F CASELLA WASTE SYS CL A 147448104 1,312,310 45,720 3.61 130,207 3.98 0.0057
2024-05-15 2024-03-31 13F CASELLA WASTE SYS CL A 147448104 1,266,590 13,986 1.12 125,228 16.98 0.0056
2024-02-14 2023-12-31 13F CASELLA WASTE SYS CL A 147448104 1,252,604 73,184 6.21 107,048 18.96 0.0052
2023-11-14 2023-09-30 13F CASELLA WASTE SYS CL A 147448104 1,179,420 40,999 3.60 89,990 -12.61 0.0050
2023-08-14 2023-06-30 13F CASELLA WASTE SYS CL A 147448104 1,138,421 79,136 7.47 102,970 17.60 0.0054
2023-05-15 2023-03-31 13F CASELLA WASTE SYS CL A 147448104 1,059,285 36,441 3.56 87,560 7.94 0.0049
2023-05-15 2022-12-31 13F/A-99 CASELLA WASTE SYS CL A 147448104 1,022,844 10,262 1.01 81,122 4.87 0.0048
2023-05-15 2022-12-31 13F CASELLA WASTE SYS CL A 147448104 1,022,844 10,262 81,122 0.0048
2022-11-15 2022-09-30 13F CASELLA WASTE SYS CL A 147448104 1,012,582 6,699 0.67 77,351 5.80 0.0049
2022-08-15 2022-06-30 13F CASELLA WASTE SYS CL A 147448104 1,005,883 330 0.03 73,108 -17.05 0.0044
2022-05-16 2022-03-31 13F CASELLA WASTE SYS CL A 147448104 1,005,553 17,197 1.74 88,137 4.40 0.0044
2022-02-14 2021-12-31 13F CASELLA WASTE SYS CL A 147448104 988,356 10,676 1.09 84,425 13.71 0.0040
2021-11-15 2021-09-30 13F CASELLA WASTE SYS CL A 147448104 977,680 -1,381 -0.14 74,245 19.55 0.0039
2021-08-16 2021-06-30 13F CASELLA WASTE SYS CL A 147448104 979,061 33,129 3.50 62,102 3.27 0.0033
2021-07-09 2021-03-31 13F/A-1 CASELLA WASTE SYS CL A 147448104 945,932 -20,287 -2.10 60,133 0.46 0.0034
2021-05-17 2021-03-31 13F CASELLA WASTE SYS CL A 147448104 945,932 -20,287 60,133 0.0034
2021-02-16 2020-12-31 13F CASELLA WASTE SYS CL A 147448104 966,219 33,461 3.59 59,857 14.90 0.0037
2020-11-10 2020-09-30 13F CASELLA WASTE SYS CL A 147448104 932,758 -47,636 -4.86 52,095 1.95 0.0036
2020-08-14 2020-06-30 13F CASELLA WASTE SYS CL A 147448104 980,394 21,372 2.23 51,098 36.41 0.0037
2020-06-19 2020-03-31 13F/A-1 CASELLA WASTE SYS CL A 147448104 959,022 22,368 2.39 37,459 -13.12 0.0033
2020-05-11 2020-03-31 13F CASELLA WASTE SYS CL A 147448104 959,022 22,368 37,459 3,289.6544
2020-02-06 2019-12-31 13F CASELLA WASTE SYS CL A 147448104 936,654 31,651 3.50 43,114 10.94 0.0030
2019-11-14 2019-09-30 13F CASELLA WASTE SYS CL A 147448104 905,003 5,951 0.66 38,861 9.07 0.0029
2019-08-14 2019-06-30 13F CASELLA WASTE SYS CL A 147448104 899,052 87,031 10.72 35,629 23.39 0.0027
2019-05-15 2019-03-31 13F CASELLA WASTE SYS CL A 147448104 812,021 51,227 6.73 28,875 33.22 0.0023
2019-02-12 2018-12-31 13F CASELLA WASTE SYS CL A 147448104 760,794 -33,751 -4.25 21,675 -12.17 0.0020
2018-11-09 2018-09-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 794,545 37,245 4.92 24,677 27.23 0.0019
2018-08-14 2018-06-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 757,300 32,232 4.45 19,395 14.40 0.0016
2018-05-15 2018-03-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 725,068 4,704 0.65 16,953 2.23 0.0014
2018-02-14 2017-12-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 720,364 29,628 4.29 16,584 27.74 0.0013
2017-11-14 2017-09-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 690,736 -16,966 -2.40 12,983 11.78 0.0011
2017-08-14 2017-06-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 707,702 47,955 7.27 11,615 24.76 0.0010
2017-05-15 2017-03-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 659,747 14,986 2.32 9,310 16.38 0.0008
2017-02-09 2016-12-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 644,761 43,839 7.30 8,000 29.26 0.0008
2017-01-13 2016-09-30 13F/A-1 CASELLA WASTE SYS INC -CL A Common equity shares 147448104 600,922 3,908 0.65 6,189 32.05 0.0006
2016-11-14 2016-09-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 600,922 6,189
2016-08-12 2016-06-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 597,014 17,762 3.07 4,687 20.86 0.0005
2016-05-20 2016-03-31 13F/A-1 CASELLA WASTE SYS INC -CL A Common equity shares 147448104 579,252 17,157 3.05 3,878 15.18 0.0004
2016-05-12 2016-03-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 579,252 3,878
2016-02-16 2015-12-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 562,095 24,970 4.65 3,367 8.06 0.0004
2015-11-16 2015-09-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 537,125 -36,784 -6.41 3,116 -3.23 0.0004
2015-08-13 2015-06-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 573,909 -14,021 -2.38 3,220 -0.49 0.0003
2015-05-15 2015-03-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 587,930 -8,372 -1.40 3,236 34.39 0.0003
2015-02-11 2014-12-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 596,302 4,370 0.74 2,408 5.61 0.0002
2014-11-12 2014-09-30 13F/A-1 CASELLA WASTE SYS INC -CL A Common equity shares 147448104 591,932 2,377 0.40 2,280 -22.95 0.0002
2014-11-10 2014-09-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 591,932 2,280
2014-08-12 2014-06-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 589,555 -4,357 -0.73 2,959 -2.41 0.0003
2014-05-15 2014-03-31 13F/A-1 CASELLA WASTE SYS INC -CL A Common equity shares 147448104 593,912 40,940 7.40 3,032 -5.43 0.0003
2014-05-13 2014-03-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 593,912 3,032
2014-02-06 2013-12-31 13F/A-1 CASELLA WASTE SYS INC -CL A Common equity shares 147448104 552,972 32,958 6.34 3,206 7.15 0.0004
2014-02-06 2013-12-31 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 474,733 2,080
2013-11-12 2013-09-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 520,014 2,356 0.46 2,992 34.29 0.0004
2013-08-08 2013-06-30 13F CASELLA WASTE SYS INC -CL A Common equity shares 147448104 517,658 517,658 2,228 0.0003
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.