424B4
priced
Final prospectus
Final prospectus filed after pricing with final deal terms.
Follows 8-A12B and confirms the priced prospectus.
2026-01-30 · 0001193125-26-030469
CERT
inactive
CERT
Pre-IPO filing captured from the SEC submission timeline.
Follows EFFECT in the pre-IPO sequence.
2026-01-29 · 0000876661-26-000064
8-A12B
effective
Exchange Act registration
Registration filed to list the securities under the Exchange Act ahead of trading.
Follows CERT and registers the class of securities for exchange listing.
2026-01-29 · 0001193125-26-028089
EFFECT
effective
SEC effectiveness notice
SEC declared the registration statement effective, allowing the offering to proceed.
Follows S-1/A and marks the registration effective.
2026-01-28 · 9999999995-26-000326
S-1/A
amended
Amended registration statement
Updated registration statement filed after SEC comments or deal changes.
Updates the prior S-1/A filing.
2026-01-26 · 0001193125-26-021630
S-1/A
amended
Amended registration statement
Updated registration statement filed after SEC comments or deal changes.
Updates the prior S-1/A filing.
York Space Systems Inc. is conducting its initial public offering (IPO) of 16,000,000 shares of common stock, with an anticipated price range of $30.00 to $34.00 per share. The company, previously a Delaware LLC, will convert to a corporation and rebrand as York Space Systems Inc. The IPO is underwritten by major firms including Goldman Sachs, Jefferies, and J.P. Morgan. AE Industrial Partners will hold significant voting control, positioning the company as a 'controlled company' under NYSE rules. The filing highlights risks related to ownership structure, reliance on government contracts, and regulatory approvals.
2026-01-16 · 0001193125-26-015413
S-1/A
amended
Amended registration statement
Updated registration statement filed after SEC comments or deal changes.
Updates the prior S-1 filing.
York Space Systems Inc. is conducting an initial public offering (IPO) of its common stock, transitioning from Yellowstone Midco Holdings II, LLC to a Delaware corporation. The company, focused on providing mission-critical space and defense solutions, anticipates an IPO price range and plans to list on the NYSE under 'YSS.' AE Industrial Partners LP will hold significant voting control, making York a 'controlled company' under NYSE rules. The filing highlights risks related to regulatory approvals, customer concentration, and the company's emerging growth status.
2025-12-15 · 0001193125-25-318602
S-1
filed
Initial registration statement
Initial public filing submitted to start the SEC review process.
Follows DRS in the pre-IPO sequence.
York Space Systems Inc. is transitioning from a Delaware LLC to a corporation and conducting an initial public offering (IPO) of its common stock. The company provides mission-critical space and defense solutions for national security, government, and commercial customers, specializing in proprietary hardware and software for the entire space ecosystem. It is the leading provider to the U.S. Department of Defense's Proliferated Warfighter Space Architecture (PWSA) and has demonstrated unique capabilities like space-based Link-16 connectivity. The IPO aims to raise capital for growth, with shares expected to list on the NYSE under the symbol "YSS." The filing highlights risks related to AE Industrial Partners' controlling stake, reliance on government contracts, and market competition.
2025-11-17 · 0001193125-25-284187
DRS
filed
Draft registration statement
Draft registration filed confidentially before the public launch.
First tracked pre-IPO filing for this issuer.
York Space Systems Inc. is filing a Form S-1 for its initial public offering (IPO), transitioning from a Delaware limited liability company to a corporation. The offering involves the sale of common stock, with an estimated price range and anticipated listing on a stock exchange. The company highlights its position as a leading space and defense prime contractor, specializing in mission-critical solutions for national security, government, and commercial customers. Key risks include AE Industrial Partners' controlling stake, reliance on U.S. Department of Defense contracts, and uncertainties around listing approval. The company is an emerging growth company under the JOBS Act.
2025-09-29 · 0001193125-25-221534