Quarter-end position / Version 1 · published

ALGONQUIN POWER & UTILITIES.

Reporting manager / owner
Starboard Value LP
Relationship
Associated institution
Record date
2026-06-30
Date meaning
Original Form 13F report period
CUSIP / security class
015857105 / COM
Quantity
57,189,420 shares
Reported value / amount
$335,130,001
Weight / denominator
7.408157% · Calculated: issuer/class value divided by the complete original reported table; not personal wealth
Quarter-end reported price
Not disclosed; not purchase cost
Derived value per reported unit
5.86; reported value ÷ quantity, not observed market price
Source-reported activity
Not disclosed
Coverage
Complete original information table grouped by CUSIP and security class
Reviewed by
DeepSeek AI
Published
20 Oct 2026

Original regulatory disclosure; 1 original filing line(s) grouped within this issuer/class. Absence from a disclosed table is not private account verification.

Reporting-entity association

Original filing attribution · 1 line(s)

Reporting manager: Starboard Value LP. 13F HOLDINGS REPORT. These are reported investment-discretion relationships, not proof of beneficial ownership or a personal account. Each original line is counted once, including lines naming multiple managers.

Other included managers: 1 / Starboard Value GP LLC · CIK 0001517138; 2 / Starboard Principal Co LP · CIK 0001517139; 3 / Starboard Principal Co GP LLC · CIK 0001517140; 4 / Smith Jeffrey C · CIK 0001362697; 5 / Feld Peter A · CIK 0001410600.

ORIGINAL LINEREPORTED QUANTITY / VALUEOTHER MANAGER / DISCRETIONVOTING AUTHORITY
257,189,420 shares$335,130,001Starboard Value GP LLC · CIK 0001517138; Starboard Principal Co LP · CIK 0001517139; Starboard Principal Co GP LLC · CIK 0001517140; Smith Jeffrey C · CIK 0001362697; Feld Peter A · CIK 0001410600Original field: 1, 2, 3, 4, 5 · Discretion: DFNDSole 57,189,420Shared 0 · None 0

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Sources.

Starboard Value LP — 13F-HR — 2026-06-30 · U.S. SEC EDGAR · Published 14 Aug 2026 · Collected 20 Oct 2026 · Evidence details ↗

Version history.

Version 1 · published · 20 Oct 2026 · Full review note

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