Josh R. Marion - 01 Jul 2026 Form 4 Insider Report for Kosmos Energy Ltd. (KOS)

Reporting relationship: SVP and General Counsel
Issuer ticker: KOS
Reported as of: 01 Jul 2026
Net transaction value: -$51,186
SEC form: 4
Accepted by SEC: 06 Jul 2026, 16:50:24 UTC
Prior SEC filing: 05 Feb 2026
Source filing: View source filing
Reporting owner signature: By: /s/ Josh R. Marion

Key filing fact

Josh R. Marion filed Form 4 for Kosmos Energy Ltd. (KOS) on 06 Jul 2026.

Key facts

This page summarizes Josh R. Marion's Form 4 filing for Kosmos Energy Ltd. (KOS).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 06 Jul 2026, 16:50.

Change

Previous filing in this sequence was filed on 05 Feb 2026.
Current net transaction value: -$51,186.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002025403 Primary reporting owner

Marion Josh R.

Relationship: SVP and General Counsel
Address: 8176 PARK LANE, SUITE 500, DALLAS
Signature: By: /s/ Josh R. Marion
Signature date: 06 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KOS transaction

Common Stock

Award

Transaction value
Shares: +64,248
Change %: +33%
Price: $0.000000^*
Shares after: 258,373
Date: 01 Jul 2026
Ownership: Direct
Footnotes: F1

KOS transaction

Common Stock

Sale

Transaction value: $51,186
Shares: -24,969
Change %: -9.7%
Price: $2.05
Shares after: 233,404
Date: 02 Jul 2026
Ownership: Direct
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

These restricted share units were granted under the Issuer's Long Term Incentive Plan (the "Plan") and are scheduled to vest 100% on July 1, 2026, subject to the terms of the Plan and the applicable award agreement issued thereunder.

Footnote F2

These shares were sold to satisfy the tax withholding requirement arising from the vesting of restricted share units granted to the reporting person under the Plan.

Footnote F3

The price reported above reflects the weighted average sales price. Sales of shares took place at actual prices ranging from $2.00 to $2.115 per share.