Eight of 17 up: Globalstar's replacement fleet lands three years after a $327m order

Globalstar placed eight replacement HIBLEO-4 satellites into low Earth orbit on the evening of August 15, launching on a SpaceX Falcon 9 ^[1]. That is the first of two tranches covering 17 satellites the company says are needed to maintain continuity of service alongside its existing second-generation fleet ^[2], which means a consumer safety feature has spent years waiting on a spacecraft integration line in Montreal ^[3].

The hardware was ordered in 2022, when Globalstar awarded MDA Space a $327m contract ^[4]. The programme has slipped notably, and MDA has attributed the delays to "certain key suppliers" ^[5]. Counting from the award to this launch, that is at least three years between purchase order and first orbital delivery ^[6]. Globalstar's chief executive Paul E. Jacobs called the launch "the culmination of years of focused work across our company" ^[7]. Nine HIBLEO-4 satellites remain in the final stages of integration ^[8], so roughly 53 percent of the replacement constellation is still on the ground ^[9].

The supply chain underneath is worth reading closely, because none of the parties will describe it fully. The satellites were assembled, integrated and tested by MDA Space, headquartered in Ontario, at its Montreal facility ^[3], and the payloads sit on Rocket Lab Lightning Platform buses that Rocket Lab built for MDA ^[10]. Rocket Lab announced it had made contact with all eight satellites and that all were performing nominally, without mentioning SpaceX ^[11]. MDA's release did not mention Rocket Lab's buses, and Globalstar's account mentioned neither MDA nor Rocket Lab ^[12]. Rocket Lab shares rose nearly 4.3 percent in the United States on Monday ^[13]. If you are trying to assess concentration risk in a network your product depends on, the vendor press releases will not give you the stack.

The demand side is now heavily committed. Much of Globalstar's capacity currently serves Apple ^[14], which bought a 20 percent stake for $400 million in November 2024 and handed over $1.1bn in cash to expand iPhone satellite services, with 85 percent of then-current capacity committed to Apple ^[15]. Amazon is in the process of acquiring Globalstar in a deal valued at some $11.57 billion, announced in April ^[16], has assumed the Apple relationship, and has announced new agreements to power iPhone and Apple Watch services including emergency SOS ^[17]. The HIBLEO-4 satellites carry Globalstar's SPOT service and direct-to-device SOS for smartphones, used by first responders and support teams beyond cell coverage ^[18].

Emergency messaging is the first pillar of the direct-to-device market and the least mature, with SMS, voice and eventually data expected over the next five years ^[19]. The roadmap past that is C-3, a 48-satellite constellation Globalstar intends to orbit as early as next year, designed to reach devices indoors and inside vehicles, and apparently funded by Apple's $1.1bn injection ^[20]. A 48-satellite build is six times the count that just took three years to get eight units off the pad ^[21].

Watch the second tranche: nine satellites in final integration is a status, not a date, and MDA's supplier problem has not been publicly resolved ^[8][5]. Watch whether C-3 holds its "as early as next year" framing once the replacement programme clears ^[20]. And watch what Amazon does with a capacity book that is already 85 percent promised elsewhere ^[15][17].