InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Discover the full record of transactions filed by Gramm Jefferson, Director. Insider active across 1 companies, notably Rubicon Technology, Inc.. In total, 2 filings have been published. The latest transaction was filed on 23 June 2021 — Attribution. Regulator: SEC (Form 4). The full history is accessible without signup.
Declarations2 total
01,250 shares0
Common Stock
SEC:0001213900-21-034537·
01,250 shares0
Common Stock
SEC:0001213900-21-034537:0·
2 of 2 declarations
About Gramm Jefferson
Jefferson Gramm is a Board Member at Rubicon Technology, Inc. He plays a key role in the governance of the company, contributing to strategic decision-making.
