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In August 1999, Iridium World Communications Ltd. filed a voluntary petition under Chapter 11 of the United States Bankruptcy Court, and operated as a debtor-in-possession. Iridium World Communications, Ltd. was engaged in the ownership and participation in the management of Iridium LLC, its parent company, which owned Iridium Operating LLC (Iridium), as of March 31, 1999. Iridium operated as a global wireless telecommunications company. It enabled its customers to make and receive phone calls, and receive pages virtually anywhere in the world. The company was founded in 1991 and is based in Hamilton, Bermuda.

Pharol, SGPS S.A. through its investment and partnership with Oi, S.A., provides fixed-mobile convergent, mobile broadband, pay-TV, and triple play services to corporate customers in Brazil. The company was formerly known as Portugal Telecom, SGPS, SA and changed its name to Pharol, SGPS S.A. in May 2015. Pharol, SGPS S.A. was founded in 1994 and is headquartered in Lisbon, Portugal.

Spok Holdings, Inc., through its subsidiary, Spok, Inc., provides healthcare communication solutions in the United States, Europe, Canada, Australia, Asia, and the Middle East. The company's products and services enhance workflows for clinicians and support administrative compliance. It delivers clinical information to care teams when and where it matters to enhance patient outcomes; and provides GenA Pager, a one-way alphanumeric pager. The company offers subscriptions to one-way or two-way messaging services, as well as alphanumeric pagers that are configurable to support unencrypted or encrypted operation; and ancillary services, such as voicemail, and equipment loss or maintenance protection services, as well as sells devices to resellers who lease or resell them to their subscribers. Its Spok Care Connect suite products for contact centers, clinical alerting and notification, mobile communications and messaging, and public safety notifications. In addition, the company provides professional, software license updates, and product support services, as well as sells third-party equipment. It serves businesses, professionals, management personnel, medical personnel, field sales personnel and service forces, members of the construction industry and construction trades, real estate brokers and developers, sales and services organizations, specialty trade organizations, manufacturing organizations, and government agencies. The company was formerly known as USA Mobility, Inc. and changed its name to Spok Holdings, Inc. in July 2014. Spok Holdings, Inc. was founded in 1986 and is headquartered in Alexandria, Virginia.

Siyata Mobile Inc. develops and provides cellular-based communications platform. It develops, markets, and sells rugged handheld Push-to-Talk over Cellular smartphone devices for first responders, construction workers, security guards, government agencies, utilities, transportation and waste management, amusement parks, and mobile workers in various industries. The company also offers VK7 Vehicle Kit and Uniden UV350 4G/LTE, an in-vehicle communication devices that incorporates voice, PoC, data, fleet management solutions, and other Android based applications for professional vehicles, such as trucks, vans, buses, emergency service vehicles, and other enterprise vehicles. In addition, it provides cellular amplifiers to boost the cellular signal inside homes, buildings, and vehicles. The company offers its products under the Uniden Cellular and Siyata brand names. It serves cellular network operators and their dealers, as well as commercial vehicle technology distributors for fleets in the United States, Canada, Europe, Australia, the Middle East, and internationally. The company is headquartered in Montreal, Canada.

Siyata Mobile Inc. develops and provides cellular-based communications platform. It develops, markets, and sells rugged handheld Push-to-Talk over Cellular smartphone devices for first responders, construction workers, security guards, government agencies, utilities, transportation and waste management, amusement parks, and mobile workers in various industries. The company also offers VK7 Vehicle Kit and Uniden UV350 4G/LTE, an in-vehicle communication devices that incorporates voice, PoC, data, fleet management solutions, and other Android based applications for professional vehicles, such as trucks, vans, buses, emergency service vehicles, and other enterprise vehicles. In addition, it provides cellular amplifiers to boost the cellular signal inside homes, buildings, and vehicles. The company offers its products under the Uniden Cellular and Siyata brand names. It serves cellular network operators and their dealers, as well as commercial vehicle technology distributors for fleets in the United States, Canada, Europe, Australia, the Middle East, and internationally. The company is headquartered in Montreal, Canada.