HORNBECK OFFSHORE SERVICES, INC. - Common Stock, par value $0.00001 per share (HOS)

Q: What does CUSIP 42330P107 represent in this 13F holders report?

CUSIP 42330P107 is the security identifier for HOS - HORNBECK OFFSHORE SERVICES, INC. - Common Stock, par value $0.00001 per share used to aggregate holder disclosures.

Q: How many institutions held HOS - HORNBECK OFFSHORE SERVICES, INC. - Common Stock, par value $0.00001 per share in Q3 2026?

40 institutional investors reported HOS - HORNBECK OFFSHORE SERVICES, INC. - Common Stock, par value $0.00001 per share for Q3 2026. Use the holders table for investor-level position and value details.

CUSIP: 42330P107

Q3 2026 13F Holders as of 30 Sep 2026

Security type / class: Equity / Common Stock, par value $0.00001 per share
Total 13F shares: 3,021,906
Total 13F value: $23,237,674
Share change: +1,717,994
SEC-reported price per share: $7.69
Number of holders: 40
Value change: +$12,929,169
Number of buys: 13
Number of sells: 23
Shares outstanding: 260,499,633

Security key

42330P107

Report period

Q3 2026

Institutions

Top holders

HOS full security history Ownership snapshot Full 13F holder table HORNBECK OFFSHORE SERVICES, INC. SEC filings HORNBECK OFFSHORE SERVICES, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 42330P107

Recent filing periods:

Q3 2026

Ownership snapshot

Top reported holders of HOS - HORNBECK OFFSHORE SERVICES, INC. - Common Stock, par value $0.00001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

ASOF HOS GP, LLC

Disclosed value leader

ASOF HOS GP, LLC

Comparable rows

5/15

Latest evidence

01 Sep 2026

13D/G 3/4/5 13F Lead comparable stake: 24% 10 rows are not safely comparable across share classes. 13D/G row: ASOF HOS GP, LLC Showing 1-6 of 15 holder rows.

Quick read

ASOF HOS GP, LLC leads the comparable SEC ownership view at 24%.

5 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens ASOF HOS GP, LLC's linked filing trail.

Comparable ownership Top 5

ASOF HOS GP, LLC 24%

WHITEBOX ADVISORS LLC 15%

BlackRock, Inc. 14%

DIMENSIONAL FUND ADVISORS LP 6%

MERCED CAPITAL, L.P. 5.3%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
ASOF HOS GP, LLC	13D/G 3/4/5 10%+ Owner 13D/G 3/4/5	24% Reported 13D/G · 01 Sep 2026	$617,384,130 61,738,413 shares	$0	01 Sep 2026
WHITEBOX ADVISORS LLC	13D/G 3/4/5 10%+ Owner 13D/G 3/4/5	15% Reported 13D/G · 01 Sep 2026	$378,736,960 37,873,696 shares	$0	01 Sep 2026
BlackRock, Inc.	13F 13D/G Company 13F 13D/G	14% Reported 13D/G · 30 Jun 2025	$198,669,634 22,731,079 shares	—	30 Jun 2026
DIMENSIONAL FUND ADVISORS LP	13F 13D/G Company 13F 13D/G	6% Reported 13D/G · 30 Sep 2025	$79,454,842 9,091,008 shares	—	30 Jun 2026
MERCED CAPITAL, L.P.	13D/G 13D/G	5.3% Reported 13D/G · 01 Sep 2026	$117,331,060 11,733,106 shares	$0	01 Sep 2026
Ares Holdco LLC	3/4/5 10%+ Owner 3/4/5	— denominator unverified	$208,369,133 23,840,862 shares	—	01 Sep 2026

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

3,021,906

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2026 vs Q2 2026 Across Filers

Q2 2026 holders

281

Q3 2026 holders

Holder diff

-241

Investor	Q2 2026 Shares	Q3 2026 Shares	Share Diff	Share Chg %	Q2 2026 value	Q3 2026 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend