York Space Systems Inc. ownership disclosure: BlackRock Portfolio Management LLC reports beneficial ownership of 17,846,934 shares of York Space Systems common stock, representing 14.0% of the class as reported on 03/31/2026. The filing shows sole voting power of 17,753,925 shares and sole dispositive power of 17,846,934.
The Schedule 13G states the holdings are reported by certain BlackRock business units and includes Exhibit 24 (power of attorney) and Exhibit 99 (Item 7 subsidiary information). The signature block is dated 04/29/2026.
Positive
None.
Negative
None.
Insights
BlackRock discloses a sizeable passive stake in York Space Systems (14.0%).
BlackRock Portfolio Management LLC reports beneficial ownership of 17,846,934 shares, with sole voting power on 17,753,925 shares, indicating centralized voting and dispositive authority within reporting business units. The filing is a standard Schedule 13G disclosure for larger passive investors.
Material impact depends on whether the stake is passive; the filing references aggregated Reporting Business Units under SEC Release No. 34-39538. Subsequent filings would clarify any change in intent or active involvement.
Key Figures
Beneficial ownership:17,846,934 sharesPercent of class:14.0%Sole voting power:17,753,925 shares+3 more
6 metrics
Beneficial ownership17,846,934 sharesAmount beneficially owned as reported in Item 4 (as of 03/31/2026)
Percent of class14.0%Percent of common stock reported in Item 4 (as of 03/31/2026)
Sole voting power17,753,925 sharesSole power to vote or to direct the vote (Item 4(i))
Sole dispositive power17,846,934 sharesSole power to dispose or direct disposition (Item 4(iii))
Filing typeSchedule 13GForm identified in metadata and cover information
Signature date04/29/2026Signature block date on the filing
Key Terms
Schedule 13G, Beneficially owned, Sole dispositive power, Reporting Business Units
4 terms
Schedule 13Gregulatory
"Name of form reported as Schedule 13G on the cover"
A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.
Beneficially ownedfinancial
"Amount beneficially owned: 17,846,934 (Item 4)"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
Sole dispositive powerfinancial
"Sole power to dispose or to direct the disposition of: 17,846,934"
Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.
Reporting Business Unitsregulatory
"securities beneficially owned by certain business units (the "Reporting Business Units")"
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
York Space Systems Inc.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
987084100
(CUSIP Number)
03/31/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
987084100
1
Names of Reporting Persons
BlackRock Portfolio Management LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
17,753,925.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
17,846,934.00
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
17,846,934.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
14.0 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
York Space Systems Inc.
(b)
Address of issuer's principal executive offices:
6060 S WILLOW DR., GREENWOOD VILLAGE, COLORADO, 80111.
Item 2.
(a)
Name of person filing:
BlackRock Portfolio Management LLC
In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)
Address or principal business office or, if none, residence:
BlackRock Portfolio Management LLC, 50 Hudson Yards New York, NY 10001
(c)
Citizenship:
See Item 4 of Cover Page
(d)
Title of class of securities:
Common Stock
(e)
CUSIP Number(s):
987084100
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
17,846,934
(b)
Percent of class:
14.0%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
17,753,925
(ii) Shared power to vote or to direct the vote:
0
(iii) Sole power to dispose or to direct the disposition of:
17,846,934
(iv) Shared power to dispose or to direct the disposition of:
0
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
Various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of York Space Systems Inc.. No one person's interest in the common stock of York Space Systems Inc. is more than five percent of the total outstanding common shares.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
See Exhibit 99
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
Not Applicable
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
