# Fundamentals #0040: Company filings: T-Mobile US, Meta Platforms, Microsoft; insider transactions

Date: 2026-10-29 10:10
URL: https://heniu.blog/en/f-log/flog-2026-10-29-0040/
Author: Heniu (heniu.blog). Text license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).

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T-Mobile US (TMUS) filed a report on changes in the board of directors regarding the departure of board member G. Michael Sievert, who is resigning from his position with a date of 1.11.2026.

Meta Platforms (META) filed document 424B5.

Meta Platforms (META) filed document 424B5.

Microsoft (MSFT) filed quarterly report 10-Q.

Microsoft (MSFT) filed a report on other events.

Insiders on 28.10 sold shares for 6.4 million USD, including 3.9 million USD from 10b5-1 plans; market purchases amounted to 0. The largest sale was reported by Airbnb (ABNB) insiders: 2.3 million USD, followed by Roper Technologies (ROP) insiders: 1.6 million USD.

8-K: 5.02 changes in management/board (Document: 8-K 5.02; Filing date (US time): 28.10; 8-K 5.02 content (change in management or board): position: board member; type of change: departure (resignation); date: 1.11.2026; persons: G. Michael Sievert; successor: not indicated; quote (EN): „On October 26, 2026, G. Michael Sievert notified the Board of Directors (the “Board”) of T-Mobile US, Inc. (the “Company”) of his decision to resign from the Board and its Transaction Committee, effective November 1, 2026.”; Source (SEC): https://www.sec.gov/Archives/edgar/data/1283699/000119312526435233/0001193125-26-435233-index.htm).

8-K: 8.01 other events (Document: 8-K 8.01,9.01; Filing date (US time): 28.10; 8-K 8.01 content (other event): quote (EN): „Other Events Microsoft Corporation (the “Company”) is filing this Current Report on Form 8-K to recast certain previously reported amounts to conform with segment reporting changes made to align our segments with how we manage our business, with respect to the financial information contained in our Annual Report on…”; Source (SEC): https://www.sec.gov/Archives/edgar/data/789019/000119312526436149/0001193125-26-436149-index.htm).