Alpheus Mangale
Introduction
Alpheus Mangale is a veteran South African technology executive — chief executive officer of pan-African connectivity operator Seacom since April 2023 and, since 2023, an independent non-executive director of the Absa Group board — whose standing collapsed in a single October week in 2026. On October 7, TechCentral reported that Seacom’s board had placed him on special leave while an independent third party investigated allegations about how the company was being run; the next day, Absa announced to shareholders that Mangale had resigned from its board effective October 8, citing “personal reasons and future commitments.” No finding of wrongdoing against Mangale has been made, and the chairman of Seacom was explicit that the inquiry is precautionary.
Background Information
Mangale built his career across the telecommunications, enterprise-technology and financial-services sectors. He spent more than 15 years at Dimension Data — later NTT — as chief technology officer, chief operating officer and client experience director across Africa and the Middle East, led Cisco’s South African division as managing director, served as chief enterprise officer at MTN Business, and held senior roles at Standard Bank, where he was group chief engineering officer until resigning in 2022 after a series of severe, highly publicized IT system outages. He took over Seacom, the subsea-cable operator, on April 1, 2023, succeeding Oliver Fortuin, and joined Absa’s board months later. At the time of his leave, he was the public face of Seacom 2.0, a 25,000km subsea cable system linking Africa, Asia and Europe for which the company was seeking to raise between US$1.5-billion and $2-billion, targeting a fourth-quarter 2026 financial close.
The Controversy or Incident That Led to Their Cancellation
Governance investigation, no findings. The allegations against Mangale have not been disclosed, tested or adjudicated. The step that ended his Absa board seat and his day-to-day command of Seacom was explicitly described by his own board chairman as a precaution, and nothing in the public record establishes wrongdoing.
Seacom chairman Pieter Uys told TechCentral on October 7 that the board had received allegations about the running of the company in which Mangale’s name was mentioned, and that it would not disclose what they related to. The board appointed an independent third party to investigate and asked for a report within about a month. Uys framed the decision as governance hygiene rather than punishment: “It’s just a precaution,” he said. “There’s nothing that says he’s guilty of anything.” Chief financial officer Charl Slabbert was named interim group CEO. Seacom’s chief marketing officer, Mandisa Ntloko-Petersen, confirmed only that Mangale had been on an extended leave of absence for three weeks and declined to say whether he had been suspended; TechCentral reported it was unable to reach Mangale for comment.
The following evening, Absa informed shareholders through the Stock Exchange News Service that Mangale had resigned as an independent non-executive director with effect from October 8, “due to personal reasons and future commitments,” and that he would also step down from the three board committees on which he served — group risk and capital management, remuneration, and information technology. The bank thanked him for his service. The resignation came one day after the special-leave disclosure, and neither company drew a formal link between the two events.
Public Reaction and Consequences
The South African business press read the sequence as it appeared: a sitting group CEO sent home pending an independent probe, and a director exiting a major bank board the next day. Innovation Village reported the Absa departure as arriving “amid mounting professional challenges at Seacom,” while noting Absa’s official line that the exit was for personal reasons. For a man whose prior exit from Standard Bank had followed publicized system outages, the pattern-recognition in the coverage was unforgiving — two senior departures in four years, each tied in reporting to operational turmoil, though of very different kinds.
Current Status
Mangale remains Seacom’s CEO in title but has been on special leave since early October 2026, with CFO Charl Slabbert standing in as interim group CEO while the independent investigator works on a roughly one-month reporting timeline. His Absa board seat and committee memberships ended October 8. The investigation’s outcome — exoneration, findings, or a negotiated exit — had not been announced as of the latest reports, and no regulatory or criminal proceeding against him is known to exist.
Impact on Their Career/Life
The week of October 6-8, 2026, dismantled a decade-long accumulation of boardroom standing: the Seacom 2.0 capital raise — the largest project of his CEO tenure — proceeded without its chief advocate at the helm, the Absa directorship and its committee seats ended after barely three years, and his last two executive exits now both involved contested circumstances. Whatever the inquiry concludes, the sequence of a precautionary suspension followed by an immediate board resignation has already redefined how South Africa’s business community reads a résumé that once ran from Dimension Data to Cisco to Standard Bank.