InsidersTradesSigma
Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (13 ops.)
Insider track record
CEODisclosed buys
0
Disclosed sells
13
T+90 hit rate
41%
T+90 mean return
-3.0%
Across 17 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Explore the detailed record of transactions filed by Black Archie C., Chairman & CEO. Director active across 4 companies, notably Proto Labs Inc. Cumulatively, 42 reports have been recorded. Breakdown: 0 buy · 13 sells. Total volume traded: €3.5m. Activity tracked since 18 May 2021. The latest transaction was disclosed on 19 May 2026 (Attribution). Regulator: SEC (Form 4). The full history is free.
Declarations42 total
2,210 shares0Common StockSEC:0001628280-26-037251:0
4,701 shares0Common StockSEC:0001437749-24-018342:0
3,900 shares@ US$180.83428.5% of flowCommon StockSEC:0001437749-24-005409:0
20,338 shares0Common StockSEC:0001437749-24-004893:0
2,202 shares@ US$176.52564.7% of flowCommon StockSEC:0001437749-24-003359:0
42,578 shares0Common StockSEC:0001437749-24-003034:0
20,075 shares@ US$54.5412.9% of flowCommon StockSEC:0001209191-23-057087:0
1,533 shares0Common StockSEC:0001209191-23-047955:0
1,341 shares0Common StockSEC:0001127602-23-023431:0
1,333 shares0Common StockSEC:0001209191-23-033663:0
4,513 shares0Common StockSEC:0001437749-23-015300:0
6,663 shares@ US$146.121311.9% of flowCommon StockSEC:0001209191-23-012842:0
26,300 shares0Common StockSEC:0001209191-23-011271:0
641 shares@ US$139.51761.1% of flowCommon StockSEC:0001209191-23-007356:0
6,002 shares@ US$133.07769.5% of flowCommon StockSEC:0001209191-23-006012:0
80,852 shares0Common StockSEC:0001209191-23-005359:0
1,707 shares@ US$27.340.6% of flowCommon StockSEC:0001209191-22-059432:0
8,530 shares@ US$27.342.9% of flowCommon StockSEC:0001209191-22-057611:0
9,763 shares@ US$27.343.4% of flowCommon StockSEC:0001209191-22-057007:0
16,155 shares@ US$27.345.8% of flowCommon StockSEC:0001209191-22-055319:0
3,236 shares0Common StockSEC:0001437749-22-021722:0
3,236 shares0Common StockSEC:0001437749-22-013232:0
1,800 shares@ US$124.95830.011% mcap6.7% of flowCommon StockSEC:0001209191-22-015798:0
4,970 shares@ US$122.80220.029% mcap18.1% of flowCommon StockSEC:0001209191-22-012683:0
19,426 shares0Common StockSEC:0001209191-22-011213:0
25 of 42 declarations
About Black Archie C.
Archie C. Black is the Chairman & CEO of Proto Labs Inc and SPS Commerce Inc. With significant experience in the industry, he leads strategic operations and oversees the growth of these companies. Under his leadership, Proto Labs Inc has established itself as a leader in digital manufacturing, while SPS Commerce Inc is recognized for its supply chain solutions. Archie C. Black also serves on the board of these companies, providing valuable expertise in strategic decision-making.
