Quentin S. Blackford - Net Worth and Insider Trading

Quentin S. Blackford Net Worth

The estimated net worth of Quentin S. Blackford is at least $67 Million dollars as of 2024-05-08. Quentin S. Blackford is the COO of DexCom Inc and owns about 308,480 shares of DexCom Inc (DXCM) stock worth over $40 Million. Quentin S. Blackford is the President and CEO of iRhythm Technologies Inc and owns about 180,015 shares of iRhythm Technologies Inc (IRTC) stock worth over $19 Million. Quentin S. Blackford is also the Director of Alphatec Holdings Inc and owns about 572,605 shares of Alphatec Holdings Inc (ATEC) stock worth over $8 Million. Besides these, Quentin S. Blackford also holds Axogen Inc (AXGN) , NuVasive Inc (NUVA) . Details can be seen in Quentin S. Blackford's Latest Holdings Summary section.

Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the assumption that Quentin S. Blackford has not made any transactions after 2024-03-07 and currently still holds the listed stock(s).

Transaction Summary of Quentin S. Blackford

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Quentin S. Blackford Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Quentin S. Blackford owns 6 companies in total, including DexCom Inc (DXCM) , Axogen Inc (AXGN) , and Alphatec Holdings Inc (ATEC) among others .

Click here to see the complete history of Quentin S. Blackford’s form 4 insider trades.

Insider Ownership Summary of Quentin S. Blackford

Ticker Comapny Transaction Date Type of Owner
DXCM DexCom Inc 2021-09-10 EVP & CFO & PFO & PAO
AXGN Axogen Inc 2021-06-01 director
ATEC Alphatec Holdings Inc 2024-03-07 director
2015-12-07 CFO and CAO
2024-02-29 director & President and CEO
2022-08-01 director

Quentin S. Blackford Latest Holdings Summary

Quentin S. Blackford currently owns a total of 5 stocks. Among these stocks, Quentin S. Blackford owns 308,480 shares of DexCom Inc (DXCM) as of September 10, 2021, with a value of $40 Million and a weighting of 59.72%. Quentin S. Blackford owns 180,015 shares of iRhythm Technologies Inc (IRTC) as of February 29, 2024, with a value of $19 Million and a weighting of 28.22%. Quentin S. Blackford also owns 572,605 shares of Alphatec Holdings Inc (ATEC) as of March 7, 2024, with a value of $8 Million and a weighting of 11.57%. The other 2 stocks Axogen Inc (AXGN) , NuVasive Inc (NUVA) have a combined weighting of 0.49% among all his current holdings.

Latest Holdings of Quentin S. Blackford

Ticker Comapny Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
DXCM DexCom Inc 2021-09-10 308,480 130.10 40,133,248
IRTC iRhythm Technologies Inc 2024-02-29 180,015 105.34 18,962,780
ATEC Alphatec Holdings Inc 2024-03-07 572,605 13.58 7,775,976
AXGN Axogen Inc 2019-08-12 39,468 5.79 228,520
NUVA NuVasive Inc 2015-12-07 2,599 39.75 103,310

Holding Weightings of Quentin S. Blackford


Quentin S. Blackford Form 4 Trading Tracker

According to the SEC Form 4 filings, Quentin S. Blackford has made a total of 9 transactions in DexCom Inc (DXCM) over the past 5 years, including 0 buys and 9 sells. The most-recent trade in DexCom Inc is the sale of 298,592 shares on September 10, 2021, which brought Quentin S. Blackford around $10 Million.

According to the SEC Form 4 filings, Quentin S. Blackford has made a total of 3 transactions in iRhythm Technologies Inc (IRTC) over the past 5 years, including 1 buys and 2 sells. The most-recent trade in iRhythm Technologies Inc is the sale of 24,701 shares on February 29, 2024, which brought Quentin S. Blackford around $3 Million.

According to the SEC Form 4 filings, Quentin S. Blackford has made a total of 1 transactions in Alphatec Holdings Inc (ATEC) over the past 5 years, including 1 buys and 0 sells. The most-recent trade in Alphatec Holdings Inc is the acquisition of 20,000 shares on March 7, 2024, which cost Quentin S. Blackford around $256,600.

More details on Quentin S. Blackford's insider transactions can be found in the Insider Trading History of Quentin S. Blackford table.

Insider Trading History of Quentin S. Blackford

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.

Quentin S. Blackford Trading Performance

GuruFocus tracks the stock performance after each of Quentin S. Blackford's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Quentin S. Blackford is 2.29%. GuruFocus also compares Quentin S. Blackford's trading performance to market benchmark return within the same time period. The performance of stocks bought by Quentin S. Blackford within 3 months outperforms 0 times out of 3 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Quentin S. Blackford'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 Quentin S. Blackford

Average Return

Average return per transaction

Outperforming Transactions

0 out of 2 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(%) 0.14
Relative Return to S&P 500(%) -3.04

Quentin S. Blackford Ownership Network

Ownership Network List of Quentin S. Blackford

No Data

Ownership Network Relation of Quentin S. Blackford


Quentin S. Blackford Owned Company Details

What does DexCom Inc do?

Who are the key executives at DexCom Inc?

Quentin S. Blackford is the EVP & CFO & PFO & PAO of DexCom Inc. Other key executives at DexCom Inc include EVP & Chief Legal Officer Micheal Jon Brown , * Matthew Vincent Dolan , and Chief Human Resources Officer Sadie Stern .

DexCom Inc (DXCM) Insider Trades Summary

Over the past 18 months, Quentin S. Blackford made no insider transaction in DexCom Inc (DXCM). Other recent insider transactions involving DexCom Inc (DXCM) include a net sale of 20,032 shares made by Steven Robert Pacelli , a net sale of 31,284 shares made by Sadie Stern , and a net sale of 329,692 shares made by Kevin R Sayer .

In summary, during the past 3 months, insiders sold 214,480 shares of DexCom Inc (DXCM) in total and bought 0 shares, with a net sale of 214,480 shares. During the past 18 months, 561,776 shares of DexCom Inc (DXCM) were sold and 0 shares were bought by its insiders, resulting in a net sale of 561,776 shares.

DexCom Inc (DXCM)'s detailed insider trading history can be found in Insider Trading Tracker table.

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DexCom Inc Insider Transactions

No Available Data

Quentin S. Blackford Mailing Address

Above is the net worth, insider trading, and ownership report for Quentin S. Blackford. You might contact Quentin S. Blackford via mailing address: 7475 Lusk Blvd., San Diego Ca 92121.

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