John Maraganore - Net Worth and Insider Trading

John Maraganore Net Worth

The estimated net worth of John Maraganore is at least $52 Million dollars as of 2026-08-29. John Maraganore is the CEO of Alnylam Pharmaceuticals Inc and owns about 217,898 shares of Alnylam Pharmaceuticals Inc (ALNY) stock worth over $52 Million. John Maraganore is the Director of Agios Pharmaceuticals Inc and owns about 22,047 shares of Agios Pharmaceuticals Inc (AGIO) stock worth over $734,386. John Maraganore is also the Director of bluebird bio Inc and owns about 292 shares of bluebird bio Inc (BLUE) stock worth over $1,451. Details can be seen in John Maraganore'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 John Maraganore has not made any transactions after 2021-11-12 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of John Maraganore

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John Maraganore Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, John Maraganore owns 11 companies in total, including Alnylam Pharmaceuticals Inc (ALNY) , Agios Pharmaceuticals Inc (AGIO) , and bluebird bio Inc (BLUE) among others .

Click here to see the complete history of John Maraganore’s form 4 insider trades.

Insider Ownership Summary of John Maraganore

Ticker Company Transaction Date Type of Owner
ALNY Alnylam Pharmaceuticals Inc 2021-11-12 director & President and CEO
AGIO Agios Pharmaceuticals Inc 2018-09-12 director
BLUE bluebird bio Inc 2017-09-14 director
LIMIT LIMIT 2012-10-04 director & 10 percent owner
LIMIT LIMIT 2021-11-05 director
LIMIT LIMIT 2022-01-17 director
LIMIT LIMIT 2022-07-11 director
LIMIT LIMIT 2022-07-11 director
LIMIT LIMIT 2024-06-06 director
LIMIT LIMIT 2026-03-18 director
LIMIT LIMIT 2026-04-30 director

John Maraganore Latest Holdings Summary

John Maraganore currently owns a total of 3 stocks. Among these stocks, John Maraganore owns 217,898 shares of Alnylam Pharmaceuticals Inc (ALNY) as of November 12, 2021, with a value of $52 Million and a weighting of 98.6%. John Maraganore owns 22,047 shares of Agios Pharmaceuticals Inc (AGIO) as of September 12, 2018, with a value of $734,386 and a weighting of 1.4%. John Maraganore also owns 292 shares of bluebird bio Inc (BLUE) as of September 14, 2017, with a value of $1,451 and a weighting of 0%.

Latest Holdings of John Maraganore

Ticker Company Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
ALNY Alnylam Pharmaceuticals Inc 2021-11-12 217,898 237.10 51,663,616
AGIO Agios Pharmaceuticals Inc 2018-09-12 22,047 33.31 734,386
BLUE bluebird bio Inc 2017-09-14 292 4.97 1,451

Holding Weightings of John Maraganore


John Maraganore Form 4 Trading Tracker

According to the SEC Form 4 filings, John Maraganore has made a total of 1 transactions in Alnylam Pharmaceuticals Inc (ALNY) over the past 5 years, including 0 buys and 1 sells. The most-recent trade in Alnylam Pharmaceuticals Inc is the sale of 33,978 shares on November 12, 2021, which brought John Maraganore around $6 Million.

According to the SEC Form 4 filings, John Maraganore has made a total of 0 transactions in Agios Pharmaceuticals Inc (AGIO) over the past 5 years. The most-recent trade in Agios Pharmaceuticals Inc is the sale of 27,717 shares on September 12, 2018, which brought John Maraganore around $2 Million.

According to the SEC Form 4 filings, John Maraganore has made a total of 0 transactions in bluebird bio Inc (BLUE) over the past 5 years. The most-recent trade in bluebird bio Inc is the sale of 943 shares on September 14, 2017, which brought John Maraganore around $2 Million.

Insider Trading History of John Maraganore

* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.

No transactions are available. GuruFocus only tracks and displays the purchase and sale of non-derivative security in open market or private transactions from SEC filings with the transaction code of P or S.
Total 0
  • 1
Only the transactions in Open Market or Private Sale at the market prices are included. Other transactions such as conversion of derivative security or exercise of options are not included. Insiders are limited to only officers and/or directors of the company.

John Maraganore Trading Performance

GuruFocus tracks the stock performance after each of John Maraganore's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by John Maraganore is 31.54%. GuruFocus also compares John Maraganore's trading performance to market benchmark return within the same time period. The performance of stocks bought by John Maraganore within 3 months outperforms 4 times out of 5 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how John Maraganore's insider trading performs compared to the benchmark.

Please note GuruFocus will not track the insiders’ transaction performance if he/she does not have buying transactions.

Performance of John Maraganore

Average Return

LIMIT
Average return per transaction

Outperforming Transactions

LIMIT
5 out of 5 outperforming transactions.
Each transaction is measured over a period and compared to .
1 Month 3 Months 6 Months 1 Year 2 Years 3 Years
Return(%) 18.78 LIMIT LIMIT LIMIT LIMIT LIMIT
Relative Return to S&P 500(%) 15.61 LIMIT LIMIT LIMIT LIMIT LIMIT

Get the full picture on these stocks
See GF Score, valuation, financials, and warning signs for every stock John Maraganore owns.
View ALNY Analysis

John Maraganore Ownership Network

Ownership Network List of John Maraganore

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Ownership Network Relation of John Maraganore

Insider Network Chart


John Maraganore Owned Company Details

What does Alnylam Pharmaceuticals Inc do?

Who are the key executives at Alnylam Pharmaceuticals Inc?

John Maraganore is the director & President and CEO of Alnylam Pharmaceuticals Inc. Other key executives at Alnylam Pharmaceuticals Inc include Chief Human Resources Officer Melissa Mclaughlin , CMO & EVP Dev & Med Affairs Pushkal Garg , and CSO & EVP & Head of Research Kevin Joseph Fitzgerald .

Alnylam Pharmaceuticals Inc (ALNY) Insider Trades Summary

Over the past 18 months, John Maraganore made no insider transaction in Alnylam Pharmaceuticals Inc (ALNY). Other recent insider transactions involving Alnylam Pharmaceuticals Inc (ALNY) include a net sale of 122,634 shares made by Yvonne Greenstreet , a net sale of 37,717 shares made by Pushkal Garg , and a net sale of 14,122 shares made by Tolga Tanguler .

In summary, during the past 3 months, insiders sold 3,830 shares of Alnylam Pharmaceuticals Inc (ALNY) in total and bought 0 shares, with a net sale of 3,830 shares. During the past 18 months, 294,375 shares of Alnylam Pharmaceuticals Inc (ALNY) were sold and 0 shares were bought by its insiders, resulting in a net sale of 294,375 shares.

Alnylam Pharmaceuticals Inc (ALNY)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Alnylam Pharmaceuticals Inc Insider Transactions

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John Maraganore Mailing Address

Above is the net worth, insider trading, and ownership report for John Maraganore. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, John Maraganore's mailing address is: Cambridge Ma 02139.