Spire Global (NYSE: SPIR) registers 5,000,000 Class A shares in prospectus supplement

Rhea-AI Filing Summary

Spire Global, Inc. filed a prospectus supplement registering 5,000,000 shares of Class A common stock pursuant to its Form S-1 registration statement. The supplement incorporates the Company’s Form 8-K reporting the results of its May 27, 2026 annual meeting, including director elections and advisory votes on executive compensation frequency.

The supplement states the last reported NYSE sale price of $25.48 per share on May 27, 2026. The prospectus supplement updates the May 4, 2026 prospectus and must be read together with that Prospectus.

Insights

Corporate Governance Analyst

Annual meeting outcomes confirmed board composition and advisory pay results.

The proxy results show election of Class II directors with vote totals recorded and an advisory approval of named executive officer compensation. The filing lists the May 27, 2026 vote counts for each item, providing clarity on shareholder support levels.

Shareholder votes included a non-binding frequency choice (majority for one year) and ratification of KPMG LLP as auditor for the fiscal year ending December 31, 2026. Subsequent filings will show any implemented changes tied to these advisory outcomes.

Securities Offerings Specialist

Prospectus supplement registers 5,000,000 Class A shares under the S-1.

The supplement explicitly registers 5,000,000 shares of Class A common stock and attaches the Company’s Form 8-K. The document references the underlying Registration Statement No. 333-295274 and the Prospectus dated May 4, 2026.

Price information is limited to a reported NYSE last sale of $25.48 per share on May 27, 2026. Terms, proceeds treatment, and use of proceeds are not detailed in the provided excerpt.

Key Figures

Registered shares: 5,000,000 shares Last quoted sale price: $25.48 Director vote example - William Porteous: 21,486,971 votes For +2 more

5 metrics

Registered shares 5,000,000 shares Class A common stock registered on Prospectus Supplement No. 2

Last quoted sale price $25.48 NYE last quoted sale price for Class A common stock on May 27, 2026

Director vote example - William Porteous 21,486,971 votes For Election of Class II director at Annual Meeting held May 27, 2026

Advisory pay vote - For 21,214,112 votes For Advisory (non-binding) approval of named executive officer compensation

Auditor ratification votes For 35,308,447 votes For Ratification of KPMG LLP as independent auditor for fiscal year ending December 31, 2026

Key Terms

prospectus supplement, broker non-votes, advisory (non-binding) vote

3 terms

prospectus supplement regulatory

"This prospectus supplement amends and supplements the prospectus dated May 4, 2026"

A prospectus supplement is an additional document provided alongside a company's main offering details, offering updated or extra information about a specific financial product being sold. It helps investors understand the latest terms, risks, and details of the investment, similar to how an update or revision clarifies or expands on original instructions, ensuring they have current and complete information before making a decision.

broker non-votes corporate

"Broker Non-Votes 8,832,979 shown in the director election table"

Broker non-votes occur when a brokerage firm is unable to vote on a shareholder’s behalf during a company election or decision because the shareholder has not given specific voting instructions, and the broker is not allowed or chooses not to vote on certain matters. They are important because they can affect the outcome of votes, especially when the results are close, by effectively reducing the total number of votes cast.

advisory (non-binding) vote corporate

"In an advisory (non-binding) vote, the stockholders voted as follows"

Offering Details

primary

Offering

Offering Type primary

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Accepted by SEC EDGAR 05/28/2026 - 05:04 PM Learn about SEC filing dates

FAQ

What does the SPIR prospectus supplement register?

The supplement registers 5,000,000 shares of Class A common stock under the existing Form S-1 registration. It attaches the Company’s Form 8-K and supplements the Prospectus dated May 4, 2026.

What shareholder votes were reported at Spire Global's 2026 annual meeting (SPIR)?

Stockholders elected Class II directors and approved executive compensation in a non-binding vote. Vote counts are provided for each proposal, including director tallies and advisory votes on pay frequency.

What was SPIR's last reported NYSE sale price mentioned in the supplement?

The supplement reports a last quoted NYSE sale price of $25.48 per share for Class A common stock on May 27, 2026, as stated in the prospectus supplement.

Did Spire Global ratify its independent auditor at the meeting?

Yes. Stockholders ratified the appointment of KPMG LLP as the company’s independent registered public accounting firm for the fiscal year ending December 31, 2026.

Is the prospectus supplement standalone for purchasing SPIR shares?

No. The supplement must be read with the Prospectus dated May 4, 2026; it amends and supplements that Prospectus and is not complete alone.

Filed Pursuant to Rule 424(b)(3)

Registration No. 333-295274

PROSPECTUS SUPPLEMENT NO. 2

(to Prospectus dated May 4, 2026)

SPIRE GLOBAL, INC.

5,000,000 Shares of Class A Common Stock

This prospectus supplement amends and supplements the prospectus dated May 4, 2026 (as supplemented or amended from time to time, the “Prospectus”), which forms a part of our Registration Statement on Form S-1 (No. 333-295274).

This prospectus supplement is being filed to update and supplement the information in the Prospectus with the information contained in our Current Report on Form 8-K, filed with the Securities and Exchange Commission on May 28, 2026 (the “Current Report”). Accordingly, we have attached the Current Report to this prospectus supplement.

This prospectus supplement updates and supplements the information in the Prospectus and is not complete without, and may not be delivered or utilized except in combination with, the Prospectus, including any amendments or supplements thereto. This prospectus supplement should be read in conjunction with the Prospectus and if there is any inconsistency between the information in the Prospectus and this prospectus supplement, you should rely on the information in this prospectus supplement.

Our Class A common stock is traded on the New York Stock Exchange (“NYSE”) under the symbol “SPIR.” On May 27‚ 2026, the last quoted sale price for our Class A common stock as reported on NYSE was $25.48 per share.

Investing in our securities involves a high degree of risk. Before buying any securities, you should carefully read the discussion of the risks of investing in our securities in the section titled “Risk Factors” beginning on page 5 of the Prospectus.

You should rely only on the information contained in the Prospectus, this prospectus supplement and any other prospectus supplement or amendment hereto. We have not authorized anyone to provide you with different information.

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

The date of this prospectus is May 28, 2026

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 27, 2026

SPIRE GLOBAL, INC.

(Exact name of registrant as specified in its charter)

Delaware			001-39493	85-1276957
(State or other jurisdiction of incorporation)			(Commission File Number)	(IRS Employer Identification No.)
8000 Towers Crescent Drive Suite 1100
Vienna, Virginia				22182
(Address of principal executive offices)				(Zip code)

Registrant’s telephone number, including area code: (202) 301-5127

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐		Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐		Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐		Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐		Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Class A common stock, par value of $0.0001 per share		SPIR		The New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

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 13(a) of the Exchange Act. ☐

Item 5.07 Submission of Matters to a Vote of Security Holders.

On May 27, 2026, Spire Global, Inc. (the “Company”) held its 2026 annual meeting of stockholders (the “Annual Meeting”), at which the proposals, as described in more detail in the Company’s definitive proxy statement filed with the Securities and Exchange Commission on April 13, 2026, were presented. The voting results for each of the proposals considered at the Annual Meeting are provided below.

1. Election of Directors

The stockholders elected the following nominees as Class II directors to serve on the Company’s board of directors until the Company’s 2029 annual meeting of stockholders and until their successors are duly elected and qualified.

Nominee		Votes For		Votes Withheld		Broker Non-Votes
William Porteous		21,486,971		5,022,430		8,832,979
Toni Rinow		26,448,344		61,057		8,832,979

2. Frequency of Future Votes on Named Executive Officer Compensation

In an advisory (non-binding) vote, the stockholders voted as follows with respect to the frequency of future stockholder advisory votes on the compensation paid to the Company’s named executive officers:

One Year		Two Years		Three Years		Abstentions		Broker Non-Votes
26,069,947		109,001		47,155		283,298		8,832,979

3. Named Executive Officer Compensation

The stockholders approved, in an advisory (non-binding) vote, the compensation paid to the Company’s named executive officers.

Votes For		Votes Against		Abstentions		Broker Non-Votes
21,214,112		4,407,288		888,001		8,832,979

4. Registered Public Accounting Firm

The stockholders ratified the appointment of KPMG LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026.

Votes For		Votes Against		Abstentions
35,308,447		27,349		6,584

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

			SPIRE GLOBAL, INC.
Date:	May 28, 2026	By:	/s/ Alison Engel
		Name: Title:	Alison Engel Chief Financial Officer