Robert P Ragusa - Net Worth and Insider Trading
Robert P Ragusa Net Worth
The estimated net worth of Robert P Ragusa is at least $30 Million dollars as of 2025-04-24. Robert P Ragusa is the CEO of GRAIL Inc and owns about 828,662 shares of GRAIL Inc (GRAL) stock worth over $30 Million. Robert P Ragusa is the SVP, Global Quality & Ops of Illumina Inc and owns about 4,092 shares of Illumina Inc (ILMN) stock worth over $315,166. Robert P Ragusa is also the Director of Twist Bioscience Corp and owns about 1,898 shares of Twist Bioscience Corp (TWST) stock worth over $72,845. Besides these, Robert P Ragusa also holds Accuray Inc (ARAY) . Details can be seen in Robert P Ragusa's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that Robert P Ragusa has not made any transactions after 2025-03-11 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of Robert P Ragusa
Robert P Ragusa Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, Robert P Ragusa owns 3 companies in total, including Illumina Inc (ILMN) , Twist Bioscience Corp (TWST) , and Accuray Inc (ARAY) .
Click here to see the complete history of Robert P Ragusa’s form 4 insider trades.
Insider Ownership Summary of Robert P Ragusa
Ticker | Comapny | Transaction Date | Type of Owner |
---|---|---|---|
ILMN | Illumina Inc | 2020-11-30 | SVP & Global Quality & Ops |
TWST | Twist Bioscience Corp | 2021-03-03 | director |
ARAY | Accuray Inc | 2013-01-01 | SVP Global Operations |
Robert P Ragusa Latest Holdings Summary
Robert P Ragusa currently owns a total of 4 stocks. Among these stocks, Robert P Ragusa owns 828,662 shares of GRAIL Inc (GRAL) as of March 11, 2025, with a value of $30 Million and a weighting of 98.47%. Robert P Ragusa owns 4,092 shares of Illumina Inc (ILMN) as of November 30, 2020, with a value of $315,166 and a weighting of 1.05%. Robert P Ragusa also owns 1,898 shares of Twist Bioscience Corp (TWST) as of March 3, 2021, with a value of $72,845 and a weighting of 0.24%. The other 1 stocks Accuray Inc (ARAY) have a combined weighting of 0.24% among all his current holdings.
Latest Holdings of Robert P Ragusa
Ticker | Comapny | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
GRAL | GRAIL Inc | 2025-03-11 | 828,662 | 35.74 | 29,615,137 |
ILMN | Illumina Inc | 2020-11-30 | 4,092 | 77.02 | 315,166 |
TWST | Twist Bioscience Corp | 2021-03-03 | 1,898 | 38.38 | 72,845 |
ARAY | Accuray Inc | 2013-01-01 | 45,500 | 1.57 | 71,208 |
Holding Weightings of Robert P Ragusa
Robert P Ragusa Form 4 Trading Tracker
According to the SEC Form 4 filings, Robert P Ragusa has made a total of 4 transactions in GRAIL Inc (GRAL) over the past 5 years, including 0 buys and 4 sells. The most-recent trade in GRAIL Inc is the sale of 7,625 shares on March 11, 2025, which brought Robert P Ragusa around $237,976.
According to the SEC Form 4 filings, Robert P Ragusa has made a total of 3 transactions in Illumina Inc (ILMN) over the past 5 years, including 0 buys and 3 sells. The most-recent trade in Illumina Inc is the sale of 2,890 shares on November 30, 2020, which brought Robert P Ragusa around $909,830.
According to the SEC Form 4 filings, Robert P Ragusa has made a total of 1 transactions in Twist Bioscience Corp (TWST) over the past 5 years, including 0 buys and 1 sells. The most-recent trade in Twist Bioscience Corp is the sale of 10,588 shares on March 3, 2021, which brought Robert P Ragusa around $1 Million.
More details on Robert P Ragusa's insider transactions can be found in the Insider Trading History of Robert P Ragusa table.Insider Trading History of Robert P Ragusa
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Robert P Ragusa Trading Performance
Robert P Ragusa Ownership Network
Ownership Network List of Robert P Ragusa
Ownership Network Relation of Robert P Ragusa

Robert P Ragusa Owned Company Details
What does Illumina Inc do?
Who are the key executives at Illumina Inc?
Robert P Ragusa is the SVP & Global Quality & Ops of Illumina Inc. Other key executives at Illumina Inc include director & Chief Executive Officer Jacob Thaysen , SVP & Chief People Officer Aimee L Hoyt , and SVP Product Development Susan H Tousi .
Illumina Inc (ILMN) Insider Trades Summary
Over the past 18 months, Robert P Ragusa made no insider transaction in Illumina Inc (ILMN). Other recent insider transactions involving Illumina Inc (ILMN) include a net purchase of 7,330 shares made by Jacob Thaysen , and a net sale of 315 shares made by Aimee L Hoyt .
In summary, during the past 3 months, insiders sold 0 shares of Illumina Inc (ILMN) in total and bought 0 shares, with a net sale of 0 shares. During the past 18 months, 315 shares of Illumina Inc (ILMN) were sold and 7,330 shares were bought by its insiders, resulting in a net purchase of 7,015 shares.
Illumina Inc (ILMN)'s detailed insider trading history can be found in Insider Trading Tracker table.
Illumina Inc Insider Transactions
Robert P Ragusa Mailing Address
Above is the net worth, insider trading, and ownership report for Robert P Ragusa. Currently GuruFocus does not have mailing address information for Robert P Ragusa.