Ticker | Value | Shares | Price | Security | Type | Insider | Title | Return | Flags | Date |
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William Jl Rieflin currently holds 9,250 shares of NGM BIOPHARMACEUTICALS INC (NGM), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, William Jl Rieflin has been a net buyer of NGM stock. They have purchased $409.2K and sold $93.5K worth of shares.
William Jl Rieflin's most recent insider trade was on Jun 10, 2026, when they sold 9,250 shares at $0.00 per share.
William Jl Rieflin serves as Executive at NGM BIOPHARMACEUTICALS INC (NGM). They have executed 56 insider transactions totaling $502.7K over their tenure at the company.
William Jl Rieflin holds the position of Executive at NGM BIOPHARMACEUTICALS INC, where they are responsible for executive-level decision-making and strategic oversight. They have been associated with the company for 21 years and currently hold a stake valued at $0.
William Jl Rieflin has shown a buying trading pattern, with $409.2K in total purchases and $93.5K in total sales across all transactions. Their most recent activity indicates a tendency to accumulate shares.
The largest transaction by William Jl Rieflin was on Jun 24, 2016, when they sold $8.8M worth of ANAC shares. This transaction involved 89,000 shares at $99.25 per share.
William Jl Rieflin currently owns 9,250 shares of NGM BIOPHARMACEUTICALS INC (NGM), with an estimated value of $0. This stake represents their equity holdings accumulated through purchases, awards, and option exercises.
All of William Jl Rieflin's SEC Form 4 insider trading filings are tracked on this page. Each transaction links directly to the official SEC EDGAR filing. William Jl Rieflin has 56 Form 4 filings on record as an insider at NGM BIOPHARMACEUTICALS INC.
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