1606 Corp. increases note principal to $1.83M from ex-CEO Lambrecht; adds 25% discount conversion

1606 CORP.

October 21, 2025 addendum raises promissory note principal to $1,829,550 from $1,528,550.
All accrued interest and principal convertible at 25% discount to closing bid price, subject to 4.99% limit.
Note originally issued in November 2024; amended again in March 2025 for $1,528,550.
Addendum creates a direct financial obligation under Item 2.03; full terms in Exhibit 4.1.

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