SCHEDULE 13D/A Filed 2026-04-01 Event 2026-03-30 SEC 0001193805-26-000394 →

Starboard Value LP → ALGONQUIN POWER & UTILITIES CORP. AGQPF

Stake: 7.40% Shares: 57,215,415 CUSIP: 015857105 Class: Common Shares, no par value

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 28/100 · Filer 90d Win Rate: 0% · Hist. 90d Edge: +0.0%

Filer track record (8 filings): 0% 90d win rate, +0.0% 90d edge
Held by 1 tracked 13F institutional manager
4 NPORT-P mutual funds holding CUSIP
Elevated short days-to-cover (1000.0 DTC)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

4 13D/G filings on this issuer

3 other filings besides this one

Filer Track Record

98 filings by this filer

97 other filings in the data moat

Short Interest · settle 2026-06-15

DTC 999.99

20 shares short · 0.0% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

1 holder · $11.43M

Point72 Asset Mgmt

Post-Filing Returns · since 2026-03-30 on AGQPF

+1 day

0.0%

+5 days

0.0%

+30 days

0.0%

+60 days

0.0%

+90 days

0.0%

+180 days

0.0%

Anchor price 14.45 on closest trading day on/after 2026-03-30. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on ALGONQUIN POWER & UTILITIES CORP.

Filed	Form	Filer	Stake	Shares
2026-08-06	SCHEDULE 13G	FIL Ltd	—	—	view →
2023-07-24	SC	Starboard Value LP	—	—	view →
2023-07-07	SC	Starboard Value LP	—	—	view →

Other Filings by Starboard Value LP

Filed	Form	Issuer	Stake	Shares
2026-10-06	SCHEDULE 13D/A	Qorvo, Inc.	—	0	view →
2026-08-24	SCHEDULE 13D/A	BILL Holdings, Inc.	10.10%	8,639,900	view →
2026-06-02	SCHEDULE 13D/A	Qorvo, Inc. QRVO	—	5,611,526	view →
2026-01-23	SCHEDULE	ROGERS CORP ROG	3.30%	599,328	view →
2025-05-19	SCHEDULE	Qorvo, Inc. QRVO	8.90%	8,270,655	view →
2025-05-09	SCHEDULE	GREEN DOT CORP GDOT	3.80%	2,071,070	view →
2025-03-24	SCHEDULE	Qorvo, Inc. QRVO	8.90%	8,270,655	view →
2025-02-24	SCHEDULE	Fortrea Holdings Inc. FTRE	5.40%	4,864,000	view →
2025-01-31	SCHEDULE	Fortrea Holdings Inc. FTRE	5.80%	5,199,000	view →
2024-05-06	SC	Alight, Inc. / Delaware ALIT	—	—	view →
2024-02-26	SC	Fortrea Holdings Inc. FTRE	—	—	view →
2024-01-02	SC	Bloomin' Brands, Inc. BLMN	—	—	view →
2023-09-06	SC	Bloomin' Brands, Inc. BLMN	—	—	view →
2023-07-24	SC	ALGONQUIN POWER & UTILITIES CORP. AQNB	—	—	view →
2023-07-17	SC	ACACIA RESEARCH CORP ACTG	—	—	view →
2023-07-07	SC	ALGONQUIN POWER & UTILITIES CORP. AGQPF	—	—	view →
2023-06-20	SC	Wix.com Ltd. WIX	—	—	view →
2023-06-06	SC	ROGERS CORP ROG	—	—	view →
2023-05-22	SC	Cyxtera Technologies, Inc.	—	—	view →
2023-03-17	SC	LIVEPERSON INC LPSN	—	—	view →

Showing 20 of 97

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