Companies / York Space Systems Inc.
York Space Systems Inc.
NYSE: YSSCIK 2086587GREENWOOD VILLAGE, CO
Ownership
129.7M shares outstanding · as of May 12, 2026
Ownership
| Insiders | 8.02% | 10,400,797 |
| 10%+ / strategic | 13.76% | 17,846,934 |
| Institutions | 23.98% | 31,102,367 |
| Public float | 54.24% | 70,344,360 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 15
View all →| Insider | % of shares | Shares |
|---|---|---|
BlackRock Portfolio Management LLC10% owner | 13.76% | 17,846,934 |
Wallinger DirkCEOChief Executive Officer · Director | 7.54% | 9,783,222 |
Rudra DevjyotiChief Supply Chain Officer | 0.28% | 358,357 |
Messerle KevinChief Financial Officer | 0.06% | 80,882 |
Erwin Tami A.Director | 0.06% | 79,984 |
Palko Monica J.See Remarks | 0.04% | 54,412 |
Frantz Brian DChief Accounting Officer | 0.01% | 16,000 |
Letarte TylerDirector | <0.01% | 6,764 |
Boyd AndrewDirector | <0.01% | 5,294 |
Brothers Louis R JrDirector | <0.01% | 5,294 |
Institutional holders 42
View all →| Holder | Value | % of shares |
|---|---|---|
| $473.02M | 14.81% | |
| $37.25M | 1.30% | |
| $35.30M | 1.11% | |
| $29.83M | 1.04% | |
| $25.30M | 0.79% | |
| $23.89M | 0.83% | |
| $21.45M | 0.75% | |
| $12.68M | 0.44% | |
| $10.21M | 0.37% | |
| $10.13M | 0.35% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q2 2026 as of | BlackRock, Inc. 13F manager | New | Common Stock | $473.02M | +19.2M | 19,212,689 14.81% of shares | high |
| Q1 2026 as of | Bank of New York Mellon Corp/The 13F manager | New | Common Stock | $37.25M | +1.7M | 1,680,305 1.30% of shares | medium |
| Q2 2026 as of | State Street Corporation 13F manager | New | Common Stock | $35.30M | +1.4M | 1,433,938 1.11% of shares | medium |
| Q1 2026 as of | Clearbridge Investments, LLC 13F manager | New | Common Stock | $29.83M | +1.3M | 1,345,454 1.04% of shares | medium |
| Q1 2026 as of | Voya Investment Management LLC 13F manager | New | Common Stock | $23.89M | +1.1M | 1,077,610 0.83% of shares | medium |
| Q1 2026 as of | Granahan Investment Management, LLC 13F manager | New | Common Stock | $21.45M | +968K | 967,610 0.75% of shares | medium |
| Q2 2026 as of | Temasek Holdings (Private) Limited 13F manager | Add | Common Stock | $14.22M | +578K +128.39% | 1,027,774 0.79% of shares | medium |
| Q1 2026 as of | Stephens Investment Management Group LLC 13F manager | New | Common Stock | $12.68M | +572K | 571,847 0.44% of shares | medium |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| YSS | Common Stock | 987084100 |