InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (1 ops.)
Insider track record
ExecutiveDisclosed buys
0
Disclosed sells
1
T+90 hit rate
40%
T+90 mean return
-15.4%
Across 5 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Discover the complete record of transactions filed by Porteous William D., Director. Director active across 1 company, notably BlackSky Technology Inc.. Cumulatively, 20 reports have been published. Breakdown: 0 buy · 1 sell. Total volume traded: €6k. History available since 21 December 2021. The latest transaction was disclosed on 31 December 2025 (Attribution). Regulator: SEC (Form 4). The full history is openly available.
Declarations20 total
805 sharesClass A Common StockSEC:0001753539-26-000089:0
1,200 shares0Class A Common StockSEC:0001865965-26-000002
1,200 shares0Class A Common StockSEC:0001865965-26-000002:0
1,500 shares0Class A Common StockSEC:0001753539-25-000114
1,500 shares0Class A Common StockSEC:0001753539-25-000114:0
1,116 shares0Class A Common StockSEC:0001865965-25-000007
1,116 shares0Class A Common StockSEC:0001865965-25-000007:0
2,910 shares0Class A Common StockSEC:0001753539-25-000038:0
2,085 shares0Class A Common StockSEC:0001753539-24-000175:0
570 shares@ US$10.65100.0% of flowClass A Common StockSEC:0001753539-24-000163:0
4,746 shares0Class A Common StockSEC:0001753539-24-000128:0
135,135 shares0Class A Common StockSEC:0001753539-24-000108:0
21,028 shares0Class A Common StockSEC:0001753539-24-000075:0
16,544 shares0Class A Common StockSEC:0001753539-24-000042:0
16,071 shares0Class A Common StockSEC:0001865965-24-000003:0
19,230 shares0Class A Common StockSEC:0001865965-23-000005:0
118,110 shares0Class A Common StockSEC:0001865965-23-000003:0
69,767 shares0Class A Common StockSEC:0001753539-22-000086:0
37,641 shares0Class A Common StockSEC:0001753539-21-000023
37,641 shares0Class A Common StockSEC:0001753539-21-000023:0
20 of 20 declarations
About Porteous William D.
Porteous William D. is a Director at BlackSky Technology Inc. He contributes to the governance of the company, which specializes in space technologies. As a director, he plays a key role in strategy and operational oversight, ensuring that BlackSky meets its innovation objectives.
