Casella Waste Systems, Inc.
US ˙ NasdaqGS ˙ US1474481041

SecurityCWST / Casella Waste Systems, Inc.
InstitutionConnable Office Inc
Latest Disclosed Ownership7,702 shares
Latest Disclosed Value $ 611,077
Connable Office Inc reports 29.21% increase in ownership of CWST / Casella Waste Systems, Inc.

On April 29, 2026 - Connable Office Inc filed a 13F-HR form disclosing ownership of 7,702 shares of Casella Waste Systems, Inc. (US:CWST) valued at $611,077 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 5,961 shares of Casella Waste Systems, Inc.. This represents a change in shares of 29.21% during the quarter. The current value of the position is $644,272 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)
2026-04-29 2026-03-31 13F Casella Waste Systems Com 147448104 7,702 1,741 29.21 611 4.80 0.0601
2026-02-03 2025-12-31 13F Casella Waste Systems Com 147448104 5,961 0 0.00 584 3.19 0.0535
2025-11-06 2025-09-30 13F Casella Waste Systems Com 147448104 5,961 0 0.00 566 -17.76 0.0525
2025-08-05 2025-06-30 13F Casella Waste Systems Com 147448104 5,961 -1,813 -23.32 688 -20.67 0.0681
2025-05-09 2025-03-31 13F Casella Waste Systems Com 147448104 7,774 0 0.00 867 5.35 0.0923
2025-02-05 2024-12-31 13F Casella Waste Systems Com 147448104 7,774 0 0.00 823 6.34 0.0851
2024-11-06 2024-09-30 13F Casella Waste Systems Com 147448104 7,774 0 0.00 773 0.26 0.0778
2024-08-07 2024-06-30 13F Casella Waste Systems Com 147448104 7,774 -362 -4.45 771 -4.10 0.0830
2024-04-30 2024-03-31 13F Casella Waste Systems Com 147448104 8,136 224 2.83 804 18.93 0.0911
2024-02-12 2023-12-31 13F Casella Waste Systems Com 147448104 7,912 -2,120 -21.13 676 -11.63 0.0818
2023-11-08 2023-09-30 13F Casella Waste Systems Com 147448104 10,032 0 0.00 765 -15.66 0.1051
2023-08-07 2023-06-30 13F Casella Waste Systems Com 147448104 10,032 0 0.00 907 9.41 0.1245
2023-04-17 2023-03-31 13F Casella Waste Systems Com 147448104 10,032 0 0.00 829 0.1205
2023-01-23 2022-12-31 13F Casella Waste Systems Com 147448104 10,032 0 0.00 1 -100.00 0.1140
2022-10-26 2022-09-30 13F Casella Waste Systems Com 147448104 10,032 -375 -3.60 766 1.32 0.1245
2022-08-01 2022-06-30 13F Casella Waste Systems Com 147448104 10,407 0 0.00 756 -17.11 0.1157
2022-05-12 2022-03-31 13F Casella Waste Systems Com 147448104 10,407 0 0.00 912 2.59 0.1218
2022-02-14 2021-12-31 13F Casella Waste Systems Com 147448104 10,407 527 5.33 889 18.53 0.1131
2021-11-09 2021-09-30 13F Casella Waste Systems Com 147448104 9,880 227 2.35 750 22.55 0.1088
2021-08-06 2021-06-30 13F Casella Waste Systems Com 147448104 9,653 -2,099 -17.86 612 -18.07 0.0848
2021-05-07 2021-03-31 13F Casella Waste Systems Com 147448104 11,752 0 0.00 747 2.61 0.1086
2021-02-09 2020-12-31 13F Casella Waste Systems Com 147448104 11,752 -588 -4.76 728 5.66 0.1118
2020-11-10 2020-09-30 13F Casella Waste Systems Com 147448104 12,340 435 3.65 689 11.13 0.1288
2020-08-10 2020-06-30 13F Casella Waste Systems Com 147448104 11,905 1,177 10.97 620 47.97 0.1219
2020-05-08 2020-03-31 13F Casella Waste Systems Com 147448104 10,728 1,885 21.32 419 2.95 0.1001
2020-02-07 2019-12-31 13F Casella Waste Systems Com 147448104 8,843 0 0.00 407 7.11 0.0698
2019-11-12 2019-09-30 13F Casella Waste Systems Com 147448104 8,843 80 0.91 380 9.51 0.0685
2019-08-06 2019-06-30 13F Casella Waste Systems Com 147448104 8,763 -432 -4.70 347 6.12 0.0638
2019-05-07 2019-03-31 13F Casella Waste Systems Com 147448104 9,195 356 4.03 327 29.76 0.0635
2019-02-12 2018-12-31 13F Casella Waste Systems Com 147448104 8,839 0 0.00 252 -8.36 0.0557
2018-11-06 2018-09-30 13F Casella Waste Systems Com 147448104 8,839 8,839 275 0.0528
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.