Sayward Shelley E. 4

What Happened

• Sayward Shelley E., Senior Vice President & General Counsel of Casella Waste Systems (CWST), received 4,598 shares of Class A common stock upon vesting of performance-based stock units (PSUs) and immediately sold 1,591 of those shares in a sell-to-cover transaction. The sale of 1,591 shares was at $92.91 per share, generating proceeds of $147,820. The 4,598-share award was acquired at $0.00 as the result of PSU vesting (i.e., an awarded acquisition, not a cash purchase).

Key Details

• Award (A): 4,598 shares acquired on 2026-02-26 at $0.00 (vesting of PSUs).
• Sale (S): 1,591 shares sold on 2026-02-27 at $92.91 per share for $147,820.
• Shares owned after transaction: not specified in the provided filing summary.
• Footnotes:
  • F1: The 4,598 shares came from PSUs granted on March 10, 2023, vested based on performance for 2025 and relative TSR for 2023–2025, certified Feb 26, 2026.
  • F2: The 1,591-share sale was an automatic "sell-to-cover" to satisfy tax withholding obligations and was not a discretionary sale by the reporting person.
• Filing timeliness: Report filed 2026-03-02 for transactions on 2026-02-26 and 2026-02-27; filing is timely under Form 4 two-business-day rule.

Context

• The primary event is vesting of performance awards (PSUs), which is compensation tied to company performance and relative total shareholder return; a portion was sold automatically to cover taxes. This is common routine insider activity tied to payroll/tax withholding and does not necessarily indicate a discretionary view on the stock.