IPO registrations (S-1, F-1) · Registrants
York Space Systems Inc.
- SEC CIK
- 2086587 · filings on EDGAR ↗
- Name on the registration
- Yellowstone Midco Holdings II, LLC
- Former names
- Yellowstone Midco Holdings II, LLC (2025–2026)
- Registration
- Form S-1, first filed 2025-11-17, last 2026-01-26; 1 initial registration, 3 amendments
- Outcome
- Final prospectus filed 2026-01-30; declared effective 2026-01-28
- Industry (SIC)
- Guided Missiles & Space Vehicles & Parts 3760
- Incorporated in
- DE
- Business address
- 6060 S WILLOW DR., Greenwood Village, CO 80111
- Ticker
- YSS (NYSE)
- EDGAR entity type
- operating
- Insiders and CEO pay
- York Space Systems Inc. on the corporate pages
Offering terms
- Proposed price range
- $30.00–$34.00 per share (S-1/A filed 2026-01-26)
- Final price
- $34.00 per share, within the range (424B4 filed 2026-01-30, an initial public offering)
- Shares sold
- 18,500,000
- Gross proceeds
- $629,000,000 before underwriting discounts and any over-allotment option
- Listing
- NYSE under the symbol YSS
- Lead underwriters
- Goldman Sachs; Jefferies; Wells Fargo
- Syndicate
- J.P. Morgan; Citigroup; Truist Securities; Baird; Raymond James; Canaccord Genuity; Needham & Company; Academy Securities
Read from the cover pages of the filings listed under “Prospectus pages read” below; check the document for anything that matters.
On this site
- Business registration: York Space Systems LLC Fuzzy (name and state)
- Business registration: YORK SPACE SYSTEMS LLC Fuzzy (name and state)
- Business registration: YORK SPACE SYSTEMS LLC Fuzzy (name and state)
- Business registration: YORK SPACE SYSTEMS LLC Fuzzy (name and state)
- Federal award recipient: YORK SPACE SYSTEMS LLC Fuzzy (name and state)
- Lobbying client: YORK SPACE SYSTEMS Fuzzy (name and state)
- Lobbying client: YORK SPACE SYSTEMS Fuzzy (name and state)
- SEC filer: Yellowstone Midco Holdings II, LLC EXACT (CIK (EXACT))
Filings 7
| Filed | Form | What it is | Name as filed | EDGAR |
|---|---|---|---|---|
| 2025-11-17 | S-1 | S-1 (registration) | Yellowstone Midco Holdings II, LLC | 0001193125-25-284187 ↗ |
| 2025-12-15 | S-1/A | S-1/A (amendment) | Yellowstone Midco Holdings II, LLC | 0001193125-25-318602 ↗ |
| 2026-01-16 | S-1/A | S-1/A (amendment) | Yellowstone Midco Holdings II, LLC | 0001193125-26-015413 ↗ |
| 2026-01-26 | S-1/A | S-1/A (amendment) | Yellowstone Midco Holdings II, LLC | 0001193125-26-021630 ↗ |
| 2026-01-28 | S-1MEF | S-1MEF (added securities) | Yellowstone Midco Holdings II, LLC | 0001193125-26-027787 ↗ |
| 2026-01-28 | EFFECT | EFFECT (declared effective) | Yellowstone Midco Holdings II, LLC | 9999999995-26-000326 ↗ |
| 2026-01-30 | 424B4 | 424B4 (final prospectus) | Yellowstone Midco Holdings II, LLC | 0001193125-26-030469 ↗ |
Prospectus pages read 2
| Filed | Form | Read as | Range | Price | Shares | Proceeds | Listing | Underwriters | What was found | Document |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-01-26 | S-1/A | registration statement | $30.00–$34.00 | $32.00 | 16,000,000 | $512,000,000 | NYSE YSS | 11 | primary document; range, price sentence, shares headline, proceeds computed, cover names 11 | document ↗ |
| 2026-01-30 | 424B4 | final prospectus | $34.00 | 18,500,000 | $629,000,000 | NYSE YSS | 11 | primary document; price table, shares sentence, proceeds table, cover names 11 | document ↗ |
Officers, directors and large holders Forms 3, 4 and 5
| Insider | Role | Title | Filings | Years | On this site |
|---|---|---|---|---|---|
| AEROEQUITY GP, LLC | TenPercentOwner | 4 | 2026 | ||
| BlackRock Portfolio Management LLC | TenPercentOwner | 7 | 2026 | ||
| Boyd Andrew | Director | 2 | 2026 | ||
| Brothers Louis R Jr | Director | 2 | 2026 | ||
| Erwin Tami A. | Director | 2 | 2026 | ||
| GREENE MICHAEL ROBERT | TenPercentOwner | 4 | 2026 | ||
| Konert Kirk Michael | Director | 2 | 2026 | ||
| Letarte Tyler | Director | 2 | 2026 | ||
| McConville James | Director | 2 | 2026 | ||
| Messerle Kevin | Officer | Chief Financial Officer | 2 | 2026 | |
| Palko Monica J. | Officer | See Remarks | 2 | 2026 | |
| ROWE DAVID H. | TenPercentOwner | 4 | 2026 | ||
| Rudra Devjyoti | Officer | Chief Supply Chain Officer | 2 | 2026 | |
| Wallinger Dirk | Director,Officer | Chief Executive Officer | 3 | 2026 | |
| Frantz Brian D | Officer | Chief Accounting Officer | 2 | 2026 | |
| Davidson Janine | Director | 2 | 2026 |
Everyone who filed an insider report for this company, from the SEC’s Insider Transactions Data Sets (2006 on). Person pages are matched by name and state only.
Data: SEC EDGAR. The quarterly full index (every S-1, S-1/A, F-1 and F-1/A since 1993, with the pricing prospectus, notice of effectiveness and withdrawal request of each registrant) and the company submissions data (SIC, state of incorporation, address, EIN, tickers, former names). Company details are what EDGAR holds today, not at the time of the filing.
Also on this site Fuzzy
| Record | Name as filed | Where | Dataset | Matched by |
|---|---|---|---|---|
| Business registration | York Space Systems LLC | CO | State business registries | name and state |
| Business registration | YORK SPACE SYSTEMS LLC | CO | State business registries | name and state |
| Business registration | YORK SPACE SYSTEMS LLC | CO | State business registries | name and state |
| Business registration | YORK SPACE SYSTEMS LLC | CO | State business registries | name and state |
| Federal award recipient | YORK SPACE SYSTEMS LLC | CO | Federal spending (USAspending) | name and state |
| Form D issuer | York Space Systems LLC | CO | Form D private offerings | name and state |
| Lobbying client | YORK SPACE SYSTEMS | CO | Federal lobbying (LDA) | name and state |
| Lobbying client | YORK SPACE SYSTEMS | CO | Federal lobbying (LDA) | name and state |
| Patent assignee | YORK SPACE SYSTEMS LLC | CO | Patents (USPTO) | name and state |
| SEC filer | York Space Systems Inc. | SEC filers (EDGAR) | CIK (EXACT) | |
| Trademark owner | York Space Systems, LLC | CO | Trademarks (USPTO) | name and state |
Matched by an identifier (EIN, CIK, CRD), by name and state or city, or by street address; a shared name or address is not proof of the same person or organization. Every link says how it was made; how the cross-referencing works.
Others with the same interests
SIC industry Guided Missiles & Space Vehicles & Parts, CO first:
- Voyager Technologies, Inc./TX CO
- KRATOS DEFENSE & SECURITY SOLUTIONS, INC. CA
- Momentus Inc. CA
- Rocket Lab Corp CA
- Helio Corp /FL/ CA
- Redwire Corp FL
- Terran Orbital Corp FL
- NON INVASIVE MONITORING SYSTEMS INC /FL/ FL
- GOODRICH CORP NC
- Firefly Aerospace Inc. TX
In other datasets, the same topic (Transportation) in CO:
- Lobbying client: ACCELERATE COLORADO (Federal lobbying (LDA))
Interests: Guided Missiles & Space Vehicles & Parts · Transportation