SCHEDULE Filed 2025-02-19 Event 2025-02-14 SEC 0000950170-25-023180 →

BlackRock Portfolio Management LLC → Hess Midstream LP HESM

Stake: 13.90% Shares: 18,715,111 CUSIP: 428103105 Class: Class A Shares

Item 4 — Purpose of Transaction

Item 4 of the Schedule 13D is hereby amended and supplemented as follows: February 2025 Option Exercise On February 14, 2025, pursuant to the February 2025 Underwriting Agreement, the Underwriter exercised its option to purchase 1,650,000 Class A Shares from Blue Holding at $39.11 per share (the "February 2025 Option Exercise"). The February 2025 Option Exercise was consummated on February 19, 2025. In connection with the sale, Blue Holding redeemed 1,650,000 OpCo Class B Units for a corresponding number of Class A Shares.

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

11 13D/G filings on this issuer

10 other filings besides this one

Filer Track Record

57 filings by this filer

56 other filings in the data moat

Short Interest · settle 2026-08-31

DTC 4.64

6,459,497 shares short · -2.7% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

1 holder · $38.78M

Point72 Asset Mgmt

Post-Filing Returns · since 2025-02-14 on HESM

+1 day

0.0%

+5 days

0.0%

+30 days

0.0%

+60 days

0.0%

+90 days

0.0%

+180 days

0.0%

Anchor price 39.15 on closest trading day on/after 2025-02-14. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Hess Midstream LP

Filed	Form	Filer	Stake	Shares
2025-01-15	SCHEDULE	Hess Investments North Dakota LLC	44.30%	81,916,146	view →
2025-01-15	SCHEDULE	Global Infrastructure Investors II, LLC	23.20%	31,234,403	view →
2023-05-22	SC	Hess Investments North Dakota LLC	—	—	view →
2023-05-22	SC	GIP II Blue Holding, L.P.	—	—	view →
2021-10-12	SC	GIP II Blue Holding, L.P.	—	—	view →
2021-10-12	SC	Hess Investments North Dakota LLC	—	—	view →
2021-08-11	SC	GIP II Blue Holding Partnership, L.P.	—	—	view →
2021-08-10	SC	Hess Investments North Dakota LLC	—	—	view →
2021-03-16	SC	Hess Investments North Dakota LLC	—	—	view →
2021-03-16	SC	GIP II Blue Holding Partnership, L.P.	—	—	view →

Other Filings by BlackRock Portfolio Management LLC

Filed	Form	Issuer	Stake	Shares
2026-09-08	SCHEDULE 13G	Calamos Convertible Opportunities and Income Fund	—	—	view →
2026-09-08	SCHEDULE 13G	Calamos Convertible & High Income Fund	—	—	view →
2026-09-08	SCHEDULE 13G	Calamos Global Dynamic Income Fund	—	—	view →
2026-09-08	SCHEDULE 13G	Calamos Global Total Return Fund	—	—	view →
2026-09-08	SCHEDULE 13G	Calamos Strategic Total Return Fund	—	—	view →
2026-09-04	SCHEDULE 13G	iShares S&P GSCI Commodity-Indexed Trust	—	—	view →
2026-09-04	SCHEDULE 13G	MYRIAD GENETICS INC	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares iBonds Dec 2056 Term Treasury ETF	—	—	view →
2026-09-04	SCHEDULE 13G/A	ISHARES CURRENCY HEDGED MSCI JAPAN ETF	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares iBonds Dec 2036 Term Corporate ETF	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares iBonds 2033 Term High Yield and Income ETF	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares S&P 500 3% Capped ETF	—	—	view →
2026-09-04	SCHEDULE 13G/A	Galiano Gold Inc.	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares, Inc.	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares, Inc.	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares, Inc.	—	—	view →
2026-09-04	SCHEDULE 13G/A	iSHARES TRUST	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares Enhanced Large Cap Core Active ETF	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares Emerging Markets Bond Active ETF	—	—	view →
2026-09-04	SCHEDULE 13G/A	iShares iBonds Dec 2046 Term Treasury ETF	—	—	view →

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