Brian D. Frantz - 29 Jan 2026 Form 3 Insider Report for Yellowstone Midco Holdings II, LLC (YSS)

Signature
/s/ Monica Palko, by Power of Attorney
Issuer symbol
YSS
Transactions as of
29 Jan 2026
Net transactions value
$0
Form type
3
Filing time
03 Feb 2026, 20:52:32 UTC
Previous filing
10 Feb 2025
Next filing
03 Feb 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Frantz Brian D Chief Accounting Officer C/O YORK SPACE SYSTEMS INC., 6060 S WILLOW DRIVE, GREENWOOD VILLAGE /s/ Monica Palko, by Power of Attorney 03 Feb 2026 0001496943

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding YSS Common Stock 5,706 29 Jan 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Includes 3,804 shares of restricted stock which vest over two years.

Remarks:

Exhibit 24.1 - Power of Attorney