InsidersTradesSigma
Total declarations
Companies
▲ Purchases (1 ops.)
▼ Sales (9 ops.)
Insider track record
Board DirectorDisclosed buys
1
Disclosed sells
9
T+90 hit rate
0%
T+90 mean return
-34.4%
Across 1 buy signal with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Browse the complete record of transactions filed by Maffei Gregory B, Board Member. Officer active across 15 companies, notably Sirius XM Holdings INC.. Cumulatively, 100 disclosures have been logged. Breakdown: 1 buy · 9 sells. Total volume traded: €1.5m. History available since 11 May 2021. The latest transaction was filed on 26 August 2026 (Attribution). Regulator: SEC (Form 4). The full history is accessible without signup.
Companies and markets linked to Maffei Gregory B
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations100 total
60 shares0Common StockSEC:0001225208-26-007367:0
1,108 shares0Common StockSEC:0001225208-26-003958:0
16,835 shares@ US$21.4648.8% of flowClass C Capital StockSEC:0001628280-26-013991:0
66,862 shares0Common StockSEC:0001225208-26-002863:0
98 shares0Common StockSEC:0001225208-25-009438:0
92 shares0Common StockSEC:0001225208-25-007533:0
19,171 shares0Common StockSEC:0001127602-25-017871:0
7,816 shares0Common StockSEC:0001225208-25-005621:0
86 shares0Common StockSEC:0001225208-25-005521:0
4,671,218 shares0Series B Common StockSEC:0001225208-25-004515:0
108,732 shares@ US$6.84100.0% of flowSeries B Common StockSEC:0001225208-25-003156:0
295,608 shares0Series B Common StockSEC:0001225208-25-003082:0
78 shares0Common StockSEC:0001225208-25-002461:0
1,038 shares@ US$80.910.1% of flowSeries C Common StockSEC:0001225208-24-010947:0
138,899 shares@ US$31.3117.1% of flowSeries C Liberty Formula One Common StockSEC:0001225208-24-010912:0
1,500,000 shares@ US$48.1050.5% of flowSeries C Common StockSEC:0001225208-24-010913:0
1,000,000 shares0Series B Common StockSEC:0001225208-24-010680:0
66 shares0Common StockSEC:0001225208-24-010167:0
75,950 shares0Common StockSEC:0001225208-24-008620:0
1,064,111 shares0Series A Liberty SiriusXM Common StockSEC:0001225208-24-008590:0
35,044 shares0Series C Common StockSEC:0001225208-24-008317:0
486 shares0Common StockSEC:0001225208-24-008269:0
81,721 shares0Series C Liberty SiriusXM Common StockSEC:0001225208-24-008217:0
4,019 shares0Common StockSEC:0001335258-24-000116:0
13,616 shares0Common StockSEC:0001127602-24-018617:0
25 of 100 declarations
About Maffei Gregory B
MAFFEI GREGORY B is Board Member and has 98 filings in total. In the 98 sampled filings, the reported volumes are EUR 936688 in purchases and EUR 544371 in sales, over the period from 2016-01-04 to 2026-03-24, with transactions of Attribution nature.
