STOCK RADAR
Filed
SHIMShimmick CorpNasdaq

Shimmick amends ATM to register up to $4.99M of common stock

424B5Dilution RiskbearishImpact65

SHIM Price

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N/A$0.00 (+0.00%)
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The ATM creates a ready supply of shares that could dilute existing holders and pressure the stock if used quickly

Shimmick filed a prospectus supplement reducing its registered ATM offering to $4,986,750 from $7.8 million. Sales would occur through Roth Capital under an ATM agreement dated September 8, 2025. No shares have been sold under the prospectus to date; May 21, 2026 closing price was $4.03 and non-affiliate market value about $33.4M

Score65

Score Rationale

bearish

ATM reduces shelf to ~$5M versus $33M public float; potential dilution.

Bullish

  • Provides flexible capital access without a fixed financing timetable
  • Experienced sales agent engaged (Roth Capital)
  • No shares sold under this prospectus yet

Bearish

  • Up to $4.99M potential new issuance
  • Size equals roughly 15% of non-affiliate market value
  • Future sales could increase share supply and depress price
  • Prospectus supplement registers up to $4,986,750 of common stock
  • ATM Agreement dated September 8, 2025; sales agent Roth Capital Partners
  • May 21, 2026 closing price $4.03; non-affiliate market value ≈ $33.4M (8,278,806 shares)
  1. 8-K or prospectus supplement reporting actual ATM sales
  2. Daily trading price and volume around any announced sales
  3. Filings if sales approach one-third S-3 limit under General Instruction I.B.6
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Original Filing Text

SEC filing text preserved from the raw item store.

### 424B5 - 424B5
424B5
1
d46914d424b5.htm
424B5

424B5

Filed Pursuant to Rule 424(b)(5)
Registration No. 333-288513

PROSPECTUS SUPPLEMENT
(To Prospectus dated July 10,
2025)

Up to $4,986,750 of Common Stock

This prospectus supplement updates and amends certain information contained in the prospectus supplement, dated September 8, 2025 and the
base prospectus, dated July 10, 2025 (together, the “Prospectus”), relating to the sale of shares of our common stock, par value $0.01 per share (the “Common Stock”) by Shimmick Corporation (the “Company”)
from time to time to or through Roth Capital Partners, LLC (the “Sales Agent”), acting as sales agent pursuant to that certain At the Market Offering Agreement, dated September 8, 2025, by and between the Company and the Sales Agent
(the “ATM Agreement”), in sales deemed to be “at the market offerings” as defined in Rule 415 promulgated under the Securities Act of 1933, as amended.

This prospectus supplement should be read in conjunction with the Prospectus and is qualified by reference to the Prospectus, except to the
extent that the information presented herein supersedes the information contained in the Prospectus. This prospectus supplement is not complete without, and may only be delivered or used in connection with, the Prospectus, including any amendments
or supplements thereto.
Under the Prospectus, we initially registered up to $7,800,000 of the Common Stock for offer and sale pursuant to
the ATM Agreement. We have not sold any shares of Common Stock under the Prospectus. We are filing this prospectus supplement to amend the Prospectus to reduce the amount of Common Stock registered under the Prospectus to $4,986,750.

Investing in our common stock involves risks. See the “Risk Factors” sections on page 6 of the base prospectus and in the
documents incorporated by reference into this prospectus supplement concerning factors you should consider before investing in our common stock.

We are an “emerging growth company” and a “smaller reporting company” as such terms are defined under the federal
securities laws and, as such, are subject to certain reduced public company reporting requirements.
Our Common Stock is listed on the
Nasdaq under the symbol “SHIM.” On May 21, 2026, the last reported sale price of our Common Stock on Nasdaq was $4.03 per share. As of May 21, 2026, the aggregate market value of our outstanding Common Stock held by non-affiliates was approximately $33.4 million, which was calculated based on 8,278,806 shares of outstanding common stock held by non-affiliates multiplied by a
price per share of $4.03, the closing price of our Common Stock on that date. Pursuant to General Instruction I.B.6 of Form S-3, in no event will we sell the shelf securities in a public primary offering with
a value exceeding more than one-third of the aggregate market value of our Common Stock held by non-affiliates in any 12-month
period immediately prior to the date of any such offering, so long as the aggregate market value of our outstanding Common Stock held by non-affiliates remains below $75 million. During the 12 calendar
months prior to and including the date of this prospectus supplement, we have not offered or sold any securities pursuant to General Instruction I.B.6 of Form S-3.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or
passed upon the accuracy or adequacy of this prospectus supplement. Any representation to the contrary is a criminal offense.
Roth
Capital Partners
The date of this prospectus supplement is May 22, 2026.