Company: SDHIU
Filing Date: 2025-03-31
Form Type: S-1MEF
Source: 0001213900-25-026608
Chunk: 1

Company: Siddhi Acquisition Corp (Cayman Islands)
Filing Date: 2025-03-31
Form: S-1MEF
Chunk 1
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 the following box and list the Securities Act registration statement number of the earlier effective registration statement
for the same offering. ☒ 333-285648

If this Form is a post-effective amendment filed
pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement
number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed
pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement
number of the earlier effective registration statement for the same offering. ☐

Indicate by check mark whether the registrant is
a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See
the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and
“emerging growth company” in Rule 12b-2 of the Exchange Act.

| Large accelerated filer |     | ☐ |     | Accelerated filer         |     | ☐ |
| Non-accelerated filer   |     | ☒ |     | Smaller reporting company |     | ☒ |
|                         |     |   |     | Emerging growth company   |     | ☒ |

If an emerging growth company, indicate by check
mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting
standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

This Registration Statement shall become effective upon filing with the SEC in accordance with Rule 462(b) under the Securities Act of 1933, as amended.

<div align='center'>EXPLANATORY NOTE</div>

This registration statement is being filed pursuant to Rule 462(b)
as promulgated under the Securities Act of 1933, as amended. Siddhi Acquisition Corp (the “Registrant”) hereby incorporates
by reference into this registration statement the contents of the Registration Statement on Form S-1 (Registration No. 333-285648),
including the exhibits thereto, which was declared effective by the Securities and Exchange Commission (the “Commission”)
on March 31, 2025 (the “Prior Registration Statement”). This registration statement is being filed solely to increase the
number of units being offered in the public