YSS · NYSE · Aerospace & Defense

York Space Systems

Builds modular spacecraft, ground systems and mission services for government and commercial customers.

$9.06
After-hours close+0.09 (+1.05%)
At close$8.97(−2.39%)

Breakdown13F · Form 4

Institutions 49.59%Insiders

Shares outstanding 131.40M · Float 83.39M · 63.5% free float

Insiders — no current Form 4 position.

Top shareholders13F · 13D/G · Form 4

HolderShares% outstandingFormFiled
BlackRock Portfolio Management LLC · 10 percent owner16.52MForm 4Aug 10, 2026
Ae Industrial Partners, LP11.73M8.93%13FAug 14, 2026
Allianz Asset Management GmbH2.73M2.08%13FAug 14, 2026
Hood River Capital Management LLC1.96M1.49%13FAug 14, 2026
Tema Etfs LLC1.90M1.45%13FJul 10, 2026

Institutions13F, as of Jun 30, 2026

176 holders · 65.16M shares · 63 new positions · 117 increased · 41 reduced · 38 closed

HolderShares% outstandingChg q/qFiled
BlackRock, Inc.19.21M14.62%+200.3KAug 7, 2026
Ae Industrial Partners, LP11.73M8.93%+430.1KAug 14, 2026
Allianz Asset Management GmbH2.73M2.08%0Aug 14, 2026
Hood River Capital Management LLC1.96M1.49%+975.4KAug 14, 2026
Tema Etfs LLC1.90M1.45%+1.90MJul 10, 2026
Toroso Investments, LLC1.84M1.40%+1.84MnewAug 13, 2026
Westwood Holdings Group Inc1.74M1.32%+1.33MAug 14, 2026
Voya Investment Management LLC1.62M1.23%+540.7KAug 12, 2026

Beneficial owners13D/G · 5% or more, as filed

No 13D/G filer at 5% or more on record.

InsidersForm 4

InsiderRoleSharesFiled
BlackRock Portfolio Management LLC10 percent owner16.52MAug 10, 2026

1 ten-percent owner holds 16.52M shares by Form 4, outside the officers-and-directors figure above

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 7, 2026
BlackRock Portfolio Management LLC10 percent owner
Sale200,170$10.9916,517,115
Aug 6, 2026
BlackRock Portfolio Management LLC10 percent owner
Sale201,504$11.6016,717,285
Aug 5, 2026
BlackRock Portfolio Management LLC10 percent owner
Sale · 2 lots128,046$13.6616,918,789
Aug 4, 2026
BlackRock Portfolio Management LLC10 percent owner
Sale · 2 lots546,558$15.5017,046,835

CongressHouse and Senate disclosures

Not reported.