Open Cabinet
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Open Cabinet

Executive branch stock tracker

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Data from the U.S. Office of Government Ethics. For informational and journalism purposes only. Not investment advice.

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Sean McMasterSM
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Sean McMaster

Administrator, Federal Highway Administration · Department of Transportation

McMaster reported 7 sales (est. $582K) and 13 purchases (est. $342K). Holdings included GRAB, OSS, HOOD, TSLA, AMKR, among others. 15 of 20 transactions were filed late.

20trades
7sales
13purchases
15late filings
Aug 7, 2025 – Jan 21, 2026

Last filing: Apr 1, 2026|Transactions: Aug 7, 2025 – Jan 21, 2026

Transaction Timeline

Confirmed90-day deadlineAug 2025Sep 2025Oct 2025Nov 2025Dec 2025Jan 2026Feb 2026
Sale
Purchase
Late filing
|
Circle size = transaction amount
DateDescriptionTickerTypeAmount
Jan 21, 2026Grab Holdings Limited Class A Ordinary SharesLateGRABPurchase$1K-$15K
Jan 13, 2026One Stop Systems Inc. Common StockOSSPurchase$15K-$50K
Jan 9, 2026Robinhood Markets Inc. Class A Common StockHOODPurchase$1K-$15K
Jan 9, 2026Grab Holdings Limited Class A Ordinary SharesGRABPurchase$15K-$50K
Dec 18, 2025Grab Holdings Limited Class A Ordinary SharesLateGRABPurchase$15K-$50K
Dec 10, 2025Tesla, Inc.TSLASale$250K-$500K
Nov 3, 2025Grab Holdings Limited Class A Ordinary SharesGRABPurchase$15K-$50K
Oct 14, 2025Amkor Technology, Inc.LateAMKRPurchase$1K-$15K
Oct 13, 2025Amkor Technology, Inc.LateAMKRPurchase$15K-$50K
Oct 13, 2025Amcor plcLateAMCRSale$15K-$50K
Oct 9, 2025MicroStrategy, Inc.LateMSTRSale$50K-$100K
Oct 9, 2025Amcor plcLateAMCRPurchase$15K-$50K
Oct 7, 2025ETHZilla CorpLateETHZPurchase$1K-$15K
Aug 13, 2025Coinbase Global Inc. Class A Common StockLateCOINSale$50K-$100K
Aug 13, 2025180 Life Sciences Corp. Common Stock (now ETHZilla)LateETHZPurchase$50K-$100K
Aug 8, 2025bitmine immersion technologyLateBMNRPurchase$1K-$15K
Aug 7, 2025Semler Scientific Inc. Common StockLateSMLRSale$1K-$15K
Aug 7, 2025Global X MSCI Argentina ETFLateARGTSale$1K-$15K
Aug 7, 2025Microsoft Corp.LateMSFTSale$1K-$15K
Aug 7, 2025bitmine immersion technologyLateBMNRPurchase$15K-$50K

Source filings

Original PDFs from the U.S. Office of Government Ethics. These are the documents Open Cabinet parses.

278-T2026-04-01PDF278-T2026-03-13PDF278-T2026-01-27PDF278-T2026-01-27PDF278-T2026-01-06PDF

Source: U.S. Office of Government Ethics, 278-T Periodic Transaction Report. Asset values and transaction amounts are reported in ranges as required by federal law. View original filings