SCHEDULE 13G Filed 2026-09-23 Event — SEC 0000919574-26-006448 →

MANCHESTER MANAGEMENT CO LLC → Alpha Cognition Inc. ACOG

Stake: — Shares: — Class: Common Stock, no par value

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)

2 transactions

2 buys · 0 sales · 0 awards/exercises

Issuer Cluster

3 13D/G filings on this issuer

2 other filings besides this one

Filer Track Record

9 filings by this filer

8 other filings in the data moat

Short Interest · settle 2026-09-30

DTC 2.79

323,405 shares short · +54.6% vs prior

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-09-25	Opaleye Management Inc.	10%+ owner	Buy	13,426	$8.47	$114K
2026-09-24	Opaleye Management Inc.	10%+ owner	Buy	18,337	$8.57	$157K

Other 13D/G Filings on Alpha Cognition Inc.

Filed	Form	Filer	Stake	Shares
2026-07-24	SCHEDULE 13G/A	Opaleye Management Inc.	—	—	view →
2026-06-29	SCHEDULE 13G/A	Opaleye Management Inc.	—	—	view →

Other Filings by MANCHESTER MANAGEMENT CO LLC

Filed	Form	Issuer	Stake	Shares
2025-03-24	SCHEDULE	Modular Medical, Inc. MODD	10.50%	5,685,236	view →
2024-01-12	SC	SANUWAVE Health, Inc. SNWV	—	—	view →
2024-01-04	SC	SANUWAVE Health, Inc. SNWV	—	—	view →
2023-07-27	SC	SANUWAVE Health, Inc. SNWV	—	—	view →
2023-07-03	SC	Modular Medical, Inc. MODD	—	—	view →
2022-02-28	SC	Modular Medical, Inc. MODD	—	—	view →
2022-02-18	SC	Modular Medical, Inc. MODD	—	—	view →
2022-02-14	SC	Modular Medical, Inc. MODD	—	—	view →

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