SEPTInvestingStart Free

HOS SCHEDULE 13D: Activist campaign

Ares Management entities

Filed with the SEC on · accession 0001104659-26-106410

HOS filed a SCHEDULE 13D (schedule 13d) with the SEC on Sep 9, 2026. A report the company filed with the SEC (the US market regulator). The stock moved +0.4% by the first close after the filing.

Summary of the filing

Ares Management entities filed a joint Schedule 13D regarding their ownership position in Hornbeck Offshore Services, Inc. The filing indicates Ares-related funds hold a significant stake in the company.

For details, click here →

Key details

Subject companyHornbeck Offshore Services, Inc.
Filer/beneficial ownerAres Management Corporation
FilerASOF HOS GP, LLC
FilerASOF HOS AIV 1, L.P.
FilerASOF HOS AIV 2, L.P.
FilerASSF IV HOS AIV 1, L.P.
FilerASSF IV HOS AIV 2, L.P.
FilerASOF II A (DE) Holdings I, L.P.
FilerASOF II Holdings I, L.P.
FilerASOF Holdings I, L.P.
FilerASOF Investment Management LLC
FilerASSF IV AIV B Holdings III, L.P.
FilerASSF IV AIV B, L.P.
FilerASSF Operating Manager IV, L.P.
FilerAres Management Holdings L.P.
FilerAres Holdco LLC
FilerAres Management GP LLC
FilerAres Voting LLC
FilerAres Partners Holdco LLC
Authorized signatory, asof hos gp, llcEvan Hoole
Authorized signatory, ares management llcAnton Feingold

How HOS stock reacted

Close before

$9.08

Sep 8, 2026

First close after

+0.44%

$9.12

5 trading days

-2.53%

$8.85

Since filing

-41.52%

$5.31

✦ Ask GOAX AI about this filing — what it means for HOS, what changed since its last filings and what to watch next.

Try it free for 7 days

🔔 Want to stay updated on new SEC filings for HOS?

Click here

Frequently asked questions

What did HOS file with the SEC on Sep 9, 2026?

HOS filed a SCHEDULE 13D (Activist campaign). Ares Management entities filed a joint Schedule 13D regarding their ownership position in Hornbeck Offshore Services, Inc. The filing indicates Ares-related funds hold a significant stake in the company.

What does a activist campaign mean for HOS stock?

A settlement removes uncertainty; the stock often reacts to whether the amount is bigger or smaller than investors expected.

How do I read a SCHEDULE 13D?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13D (schedule 13d): A report the company filed with the SEC (the US market regulator).

How did HOS stock react to this filing?

HOS closed at $9.08 before the filing and $9.12 on Sep 9, 2026 (+0.44%). Five trading days later: $8.85 (-2.53%).

Other HOS SEC filings

Get alerts when HOS files with the SEC, plus live charts, key levels and news for 13,000+ stocks.

Try SEPT free for 7 days
HOS overviewHOS analysisHOS newsLatest SEC filings