InsidersTradesSigma
Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Insider track record
Board DirectorDisclosed buys
0
Disclosed sells
0
T+90 hit rate
100%
T+90 mean return
+8.6%
Across 4 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Explore the full record of transactions filed by Sullivan Linda G, Director. Officer active across 3 companies, notably NORTHWESTERN CORP. Aggregated, 14 reports have been logged. Activity tracked since 1 February 2022. The latest transaction was disclosed on 9 July 2026 (Attribution). Regulator: SEC (Form 4). The full history is accessible without signup.
Declarations14 total
768 shares@ US$71.62Common StockSEC:0001328106-26-000007:0
834 shares@ US$65.9414.9% of flowCommon StockSEC:0001328106-26-000004:0
852 shares@ US$64.5410.3% of flowCommon StockSEC:0001328106-26-000002:0
938 shares@ US$58.6111.5% of flowCommon StockSEC:0001328106-25-000005:0
1,072 shares@ US$51.3012.9% of flowCommon StockSEC:0001993004-25-000114:0
950 shares@ US$57.8718.6% of flowCommon StockSEC:0001993004-25-000071:0
1,029 shares@ US$53.4619.9% of flowCommon StockSEC:0001993004-25-000010:0
938 shares@ US$57.2218.1% of flowCommon StockSEC:0001993004-24-000089:0
938 shares@ US$50.0816.3% of flowCommon StockSEC:0001993004-24-000058:0
854 shares@ US$50.9315.1% of flowCommon StockSEC:0000073088-24-000079:0
687 shares@ US$50.8911.9% of flowCommon StockSEC:0000073088-24-000010:0
2,750 shares@ US$59.3435.3% of flowCommon StockSEC:0000073088-23-000008:0
2,750 shares@ US$58.120.0036% mcap50.0% of flowCommon StockSEC:0000073088-22-000015:0
1,077 sharesCommon StockSEC:0001209191-16-089365:0
14 of 14 declarations
About Sullivan Linda G
Sullivan Linda G serves as a Board Member for NORTHWESTERN CORP. In this role, she contributes to the governance of the company and strategic decision-making. Her expertise in the energy sector is an asset for NORTHWESTERN CORP, which provides energy and natural gas services. Sullivan is committed to promoting sustainable management practices within the organization.
