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Insiders · Profile

BlackRock Portfolio Management LLC

10% owner at York Space Systems · 10% owner at Mediaco · 10% owner at Hess Midstream. Filing since 12 Feb 2025. CIK 0002052113

YSS York Space Systems Inc. 10% owner · 9 trades MDIA Mediaco Holding Inc. 10% owner · 1 trade HESM Hess Midstream LP 10% owner · 3 trades
Company
Date
Role
Action
Shares
Amount
Of holding
YSS York Space Systems Inc.
7 Aug 2026
10% owner
Sold at will
200,170
$2.20M
1.2%
YSS York Space Systems Inc.
6 Aug 2026
10% owner
Sold at will
201,504
$2.34M
1.2%
YSS York Space Systems Inc.
5 Aug 2026
10% owner
Sold at will
127,946
$1.75M
0.8%
YSS York Space Systems Inc.
4 Aug 2026
10% owner
Sold at will
534,053
$8.28M
3.0%
YSS York Space Systems Inc.
3 Aug 2026
10% owner
Sold at will
13,754
$206.72K
0.1%
YSS York Space Systems Inc.
31 Jul 2026
10% owner
Sold at will
35,574
$538.59K
0.2%
YSS York Space Systems Inc.
30 Jul 2026
10% owner
Sold at will
140,823
$2.14M
0.8%
YSS York Space Systems Inc.
29 Jul 2026
10% owner
Sold at will
63,390
$970.50K
0.4%
YSS York Space Systems Inc.
30 Jan 2026
10% owner
Bought
752,500
$25.59M
4.4%
MDIA Mediaco Holding Inc.
5 Sep 2025
10% owner
Sold at will
214
$282.48
0.0%
HESM Hess Midstream LP
30 May 2025
10% owner
Sold at will
15,022,517
$553.73M
100%
HESM Hess Midstream LP
19 Feb 2025
10% owner
Sold at will
1,650,000
$64.53M
100%
HESM Hess Midstream LP
12 Feb 2025
10% owner
Sold at will
11,000,000
$430.21M
100%
13 decisions on file.