Filed Pursuant to Rule 433
Registration No. 333-277211
October 22, 2026
FREE WRITING PROSPECTUS
(To Prospectus dated February 21, 2024,
Prospectus Supplement dated February 21, 2024 and
Stock-Linked Underlying Supplement dated February 21, 2024)
HSBC USA Inc.
Autocallable Contingent Income Barrier Notes with Memory Coupon
Quarterly Contingent Coupon payments at a rate... (continue reading...)
Preliminary Pricing Supplement No. 19,642Registration Statement Nos. 333-293641; 333-293641-01Dated October 22, 2026Filed Pursuant to Rule 424(b)(2)
... (continue reading...)Filed Pursuant to Rule 424(b)(4)
Registration No. 333-299155
PROSPECTUS
2,240,000 Shares of Common Stock
CitroTech Inc.
We are offering on a firm commitment basis, $5.6 million of our common stock, par value $0.0001 per share (the “Common Stock”).
The public offering price per share of common stock is $2.50. We will use the net proceeds from the offering for working capital and general corporate purposes.
Our Common Stock is listed on... (continue reading...)
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