During 2014, Ansar Bait al-Maqdis (ABM) sent emissaries to IS in Syria to seek financial support, weapons and tactical advice.

[16] On 13 November 2014, ABM dissolved its loyalty to Al-Qaeda and pledged allegiance to Abu Bakr al-Baghdadi, the leader of the Islamic State (IS), and adopted the name Sinai Province (Wilayah Sīnāʼ) claiming to be a branch of IS.

[3][17] It was believed that Abu Osama al-Masri was leader of IS-SP from August 2016 until his death in June 2018, but not much other personal information is available.

In March 2021, it was reported that another IS-SP leader, Salim Salma Said Mahmoud al-Hamadin, was killed during clashes with Egyptian and Bedouin forces near Al-Barth, south of Rafah.

[19] While the EAF's Operation Sinai with STU support has been largely successful in degrading the group capabilities, occasional attacks between July 2023 and July 2024 "demonstrated the [Islamic State] Sinai Province's resilience in the region and its continued ability to conduct a protracted campaign, even though the pace of its attacks has slowed in recent years," according to an assessment from the International Institute for Strategic Studies (IISS).