Constellation Oil Services Holding S.A.

Business and Financial Review • Mar 25, 2025

Fleet Summary Report

MARCH 2025

Appendix: Asset Portfolio - Offshore Fleet

1 On January 03. 2022. the Company announced that the Gold and Lone Star rigs have been awarded contracts with Petrobras S.A. ("Petrobras"). The operations of Gold Star contract started on August 09. 2022. while Lone Star's operations commenced on September 14. 2022. Each contract has a duration of 1095 days and has the option to be extended by mutual agreement in up 17 months. On November 25th, 2024, we announced that the Lone Star has been awarded a new contract with Brava Energia, for a firm term of 400 days plus a 60-days priced option. The operations are expected to commence in direct continuation to its current

2 On September 20. 2023. the group announced that the Alpha Star was awarded a new contract with Petrobras. The contract has a firm duration of 1095 days plus a mutually agreed option to extend it for the same period. The operations commenced in February 2025.

3 On December 06. 2021. the Company announced a new contract for the Amaralina Star drillship with Petrobras. The job has a total duration of 1095 days. consisting of 730 days of a firm scope plus options to extend the contract in up to 365 days at Petrobras discretion, which was exercised in November 2023. The operations commenced on October 18. 2022. On December 16. 2024. the Company announced that the Amaralina Star was awarded a new contract with Petrobras for a firm period of three years, expected to commence in January 2026, with an option for contract extension up to an additional 315 days, subject to mutual

	Own fleet							Managed Fleet
	GOLD STAR (1)	LONE STAR (1)	ALPHA STAR (2)	AMARALINA STAR (3)	LAGUNA STAR (4)	BRAVA STAR (5)	ATLANTIC STAR (6)	Tidal Action (7)
WATER DEPTH (FEET)	9.000	7.900	9.000	10.000	10.000	12.000	2.000	12.000
SHIPYARD	Keppel FELS	SBM Atlantia / GPC	Keppel FELS	Samsung Korea	Samsung Korea	Samsung Korea	C.F.E.M	Hanwha Korea
START OF OPERATIONS/ LAST UPGRADE	February 2010	April. 2011	July. 2011	September. 2012	November. 2012	August. 2015	1997/ February 2011	September. 2025
CLIENT CURRENTA / NEWB	Petrobras	Petrobras	Petrobras	Petrobras	PetrobrasA/B	Petrobras	Petrobras	Petrobras
CURRENT CONTRACT START¹	August. 2022	September. 2022	February. 2025	October. 2022	March. 2022	December. 2023	January. 2021	-
CURRENT CONTRACT END¹	August. 2025	September. 2025	February. 2028	November . 2025	June. 2025	December. 2026	November. 2025	-
NEW CONTRACT START²	-	September. 2025	-	February. 2026	September 2025	-	-	September. 2025
NEW CONTRACT END²	-	October 2026	-	February. 2029	July 2028	-	-	July. 2028

4 On July 6. 2021. the group announced that the Laguna Star drillship was awarded a new contract with Petrobras. The contract has a 3-year estimated duration and includes the use of the MPD system. The operations commenced on March 01. 2022, and are expected to end by June 2025, considering a priced option of additional 124 days which Petrobras has already exercised. On September 23rd. 2024, the company announced the award of a new contract with Petrobras on the Roncador Field, Campos Basin. The contract has 931 days, with a priced option of additional 95 days, and a mutually agreed option to extend it for the same firm period (931 days). The operations are expected to commence in September 2025.

- contract.

- agreement.

• it till the same period. The operations started on December 19th 2023.
• up to 301 days.
• expected to commence in September 2025.

5 On December 08. 2022. the Company announced a contract for the Brava Star drillship with Petrobras. The job has a total duration of 1095 days. plus a mutually agreed option to extend

6 On February 05. 2020. the Company announced that the Atlantic Star was awarded a contract with Petrobras. The contract has a firm duration of 1095 days and was extended by mutual agreement by 389 days. The operations commenced on January 06. 2021. On December 23. 2024, the Company announced a contract extension with Petrobras for an additional period of

7 On September 23rd. 2024. the company announced the award of a new contract with Petrobras to operate with Tidal Action on the Roncador Field, Campos Basin. Tidal Action is a third-party rig owned by the Hanwha Ocean, which will be managed and operated by us under a management fee agreement in connection with charter and service agreements with Petrobras. The contract has 931 days, with a priced option of additional 95 days, and a mutually agreed option to extend it for the same firm period (931 days). The operations are

* As of March 2025.