Who is Castellum’s transfer agent? Whom do I contact for a change of address? How do I buy Castellum stock? Where can I find Castellum’s filing with the Securities and Exchange Commission? What is the Company’s CUSIP number?

Nevada Agency and Transfer Company's (NATCO)

50 W Liberty St # 880

Reno, NV 89501

info@natco.com

(301) 961-4895

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Notify your broker if you move or need to update your address.

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New York Stock Exchange American under the symbol CTM. Shares can be purchased or sold from any stock brokerage firm or financial institution that provides brokerage services for New York Stock Exchange American stocks.

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All filings are included on our website and can be found here

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The Company’s CUSIP number is 14838T204

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