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BCS

Changes in Beneficial Ownership · 4/A

York Space Systems Inc.

YSSNYSEEQUITYCurrent

Changes in Beneficial Ownership

Filed Aug 10, 2026Accepted Aug 10, 2026, 6:02 PM EDTFiling CIK 2086587Accession 0002052113-26-000810
Share

Structured filing — 4/A

primary_doc.xml

Open full document ↗

Amendment · This filing reports the amendment as submitted.

Filing details

Report period
2026-08-04
Original submission
2026-08-06
Issuer
York Space Systems Inc.
Issuer CIK
0002086587
Trading symbol
YSS

Reporting owner 1

Name
BlackRock Portfolio Management LLC
Reporting owner CIK
0002052113
Relationship
10% owner
Address
50 HUDSON YARDS, NEW YORK, NY, 10001

Non-derivative transactions

Non-derivative transactions · 4 reported rows
SecurityTransaction dateCodeAmountA / DPrice (USD)Owned afterOwnershipNature of ownership
Common Stock2026-08-04S · Form 478,082D15.02[F4]17,515,311ISee footnotes[F1][F2][F3]
Common Stock2026-08-04S · Form 4468,476D15.58[F5]17,046,835ISee footnotes[F1][F2][F3]
Common Stock2026-08-05S · Form 4116,162D13.4916,930,673ISee footnotes[F1][F2][F3]
Common Stock2026-08-05S · Form 411,884D15.28[F6]16,918,789ISee footnotes[F1][F2][F3]
Table key
S · Form 4
Sale on the market or privately
D
Disposed
I
Indirect

Footnotes

F1
Represents shares of the Issuer's common stock held by the following funds and accounts under management by certain subsidiaries of BlackRock, Inc.: BlackRock Private Equity Co-Investments, 2021 Aggregator Cayman Ltd., BlackRock Growth Equity Fund Master Cayman Aggregator Ltd., BR POF IV CAYMAN MASTER FUND, L.P., BlackRock Private Opportunities Fund IV, L.P., BlackRock Private Opportunities Fund IV Master SCSp, TSCL Private Markets Cayman Fund Ltd., 1885 Private Opportunities Cayman Fund, Ltd., Heathrow Forest Opportunities Fund, L.P., Lincoln Pension Private Equity BR, L.P., NHRS Private Opportunities Fund, L.P., NDSIB Private Opportunities Fund Cayman Ltd., Mutual of Omaha OF Cayman, Ltd., BlackRock ERI Private Opportunities Master SCSp, Sullivan Way POF Cayman, Ltd, Total Alternatives Fund - Private Equity (B) LP, Total Alternatives Fund - Private Equity LP, 1824 Private Equity Fund, L.P., Tango Capital Opportunities Fund, L.P., BlackRock Private Investments Fund,↩ 1↩ 2↩ 3↩ 4
F2
(Continued from footnote 1) OV Private Opportunities Cayman, Ltd., SONJ Opportunities Cayman, Ltd., Red River Direct Investment Fund III, L.P., MB BlackRock Holdings Cayman Ltd. and certain other funds and accounts managed by BlackRock Financial Management, Inc., BlackRock Institutional Trust Company, National Association, BlackRock Investment Management (UK) Limited and BlackRock Investment Management, LLC (collectively, the "Advised Funds and Accounts"). Each of BlackRock Portfolio Management LLC, the Advised Funds and Accounts and their respective direct or indirect managers, general partners and portfolio managers who share voting and investment power over the shares held by the Advised Funds and Accounts expressly disclaim beneficial ownership of the shares of common stock held by the Advised Funds and Accounts, except to the extent of their pecuniary interest therein,↩ 1↩ 2↩ 3↩ 4
F3
(Continued from footnote 2) and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of the reported shares for purposes of Section 16 or for any other purposes.↩ 1↩ 2↩ 3↩ 4
F4
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.28 to $15.27, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.↩ 1
F5
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.28 to $16.00, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.↩ 1
F6
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.00 to $15.31, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.↩ 1

Remarks

In accordance with SEC Release No. 34-39538 (January 12, 1998), BlackRock Portfolio Management LLC is reporting Issuer 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. This filing does not include Issuer securities, if any, beneficially owned by other business units whose beneficial ownership of securities is disaggregated from that of the Reporting Business Units in accordance with such release. This amendment corrects the Form 4 filed on 8/6/26, which inadvertently omitted the sale of 12,505 shares on 8/4/26 at a weighted average price of $15.69 per share and the sale of 100 shares on 8/5/26 at a price of $15.13 per share.

Signature 1

Signed
BlackRock Portfolio Management LLC, By: /s/ David Maryles, Authorized Signatory
Date
2026-08-10

Company context

We are the first and only company to demonstrate Link-16 connectivity from Space. This is a significant and critical milestone towards advancing the DoD’s national security missile defense strategy. York was also the first to achieve LEO-to-LEO laser link between PWSA vendors and Space-to-Ground laser links with another vendor. We believe these two capabilities are critical for Golden Dome contracts and demonstrate York’s strong position to win on that program.

Current securities

Recent company filings

  1. SCHEDULE 13G - filed by BlackRock, Inc. regarding York Space Systems Inc.Oct 27, 2026
  2. 10-Q filingAug 14, 2026
  3. Results of Operations and Financial ConditionAug 13, 2026
  4. 4 filingAug 10, 2026
  5. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · Regulation FD DisclosureAug 5, 2026

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