# EDGAR Filing Document

**Accession Number:** 0002086587
**File Stem:** 0001193125-26-098975
**Filing Date:** 2026-3
**Character Count:** 5024
**Document Hash:** 08e03a4e395ca4863cc6e4e3c03e0546
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-098975.hdr.sgml**: 20260310

**ACCESSION NUMBER**: 0001193125-26-098975

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20260306

**ITEM INFORMATION**: Unregistered Sales of Equity Securities

**FILED AS OF DATE**: 20260310

**DATE AS OF CHANGE**: 20260309

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** York Space Systems Inc.
- **CENTRAL INDEX KEY:** 0002086587
- **STANDARD INDUSTRIAL CLASSIFICATION:** GUIDED MISSILES & SPACE VEHICLES & PARTS [3760]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43088
- **FILM NUMBER:** 26736627

**BUSINESS ADDRESS:**
- **STREET 1:** 6060 S WILLOW DR.
- **CITY:** GREENWOOD VILLAGE
- **STATE:** CO
- **ZIP:** 80111
- **BUSINESS PHONE:** 720-537-2655

**MAIL ADDRESS:**
- **STREET 1:** 6060 S WILLOW DR.
- **CITY:** GREENWOOD VILLAGE
- **STATE:** CO
- **ZIP:** 80111

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Yellowstone Midco Holdings II, LLC
- **DATE OF NAME CHANGE:** 20250917

?xml version='1.0' encoding='ASCII'? 8-K

### 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): March 6, 2026

## YORK SPACE SYSTEMS INC.

#### (Exact name of registrant as specified in its charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-43088** | **39-4190941** |
| **(State or other jurisdiction**<br> **of incorporation)** | **(Commission**<br> **File Number)** | **(IRS Employer**<br> **Identification No.)** |

---

---

| | |
|:---|:---|
| **6060 S Willow Drive** |  |
| **Greenwood Village, CO** | **80111** |
| **(Address of principal executive offices)** | **(Zip Code)** |

---

#### Registrant's telephone number, including area code: (720) 537-2655

#### 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**<br> **Symbol(s)** | **Name of each exchange**<br> **on which registered** |
| Common Stock, par value $0.0001 per share | YSS | 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. ☐

------

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| | |
|:---|:---|
| **Item 3.02.** | **Unregistered Sales of Equity Securities.**  |

---

On March 6, 2026, York Space Systems Inc., a Delaware corporation (the "Company"), entered into an Agreement and Plan of Merger (the "Merger Agreement") with Orbion Merger Sub, Inc., a Delaware corporation, Orbion Space Technology, Inc., a Delaware corporation ("Orbion"), and the sellers' representative named therein. Pursuant to the Merger Agreement, the Company acquired all of the issued and outstanding equity interests of Orbion in exchange for consideration consisting of cash and 2,812,141 shares of common stock of the Company (the "Stock Consideration"). The Stock Consideration is subject to restrictions on transfer under the Merger Agreement.

The Stock Consideration was issued in reliance upon an exemption from the registration requirements of the Securities Act of 1933, as amended, pursuant to Section 4(a)(2) thereof, which exempts transactions by an issuer not involving any public offering.

------

#### 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 hereunto duly authorized.

---

| | | |
|:---|:---|:---|
|  | **YORK SPACE SYSTEMS INC.** | **YORK SPACE SYSTEMS INC.** |
| Date: March 9, 2026 | By: | /s/ Monica Palko |
|  | Name: | Monica Palko |
|  | Title: | Chief Legal and Administrative Officer |

---