InsiderFlow

Quentin S. Blackford

IRTC

Quentin S. Blackford serves as director, officer: President and CEO at iRhythm Technologies, Inc. (IRTC). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

1 trades

$256.6K

Total Sells

9 trades

$33.06M

Net Position

Net Seller

$32.81M

Companies Traded

3

IRTC, ATEC, DXCM

Active Period

Mar 2021 – Mar 2026

10 total trades

Most Recent

Sell IRTC

Mar 3, 2026 · $3.55M

Quentin S. Blackford's Insider Trading at iRhythm Technologies, Inc. (IRTC)

Buys

0 · $0.00

Sells

6 · $17.78M

Total Shares Bought

0

Total Shares Sold

127,622

IRTC Price Chart
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DateTypeSharesAvg PriceValueShares After
Mar 3, 2026Sell27,626$128.44$3.55M213,621
Feb 26, 2026Sell25,540$135.42$3.46M186,126
Nov 3, 2025Sell14,059$182.94$2.57M0
Aug 5, 2025Sell30,000$160.54$4.82M0
Mar 3, 2025Sell8,145$108.77$885.9K0
Feb 25, 2025Sell22,252$112.13$2.50M0

Quentin S. Blackford's Insider Trading at DexCom, Inc. (DXCM)

Buys

0 · $0.00

Sells

3 · $15.29M

Total Shares Bought

0

Total Shares Sold

32,394

DXCM Price Chart
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DateTypeSharesAvg PriceValueShares After
Sep 10, 2021Sell18,662$547.62$10.22M30,303
Jun 1, 2021Sell7,223$375.00$2.71M37,942
Mar 12, 2021Sell6,509$362.22$2.36M45,165

Quentin S. Blackford's Insider Trading at Alphatec Holdings, Inc. (ATEC)

Buys

1 · $256.6K

Sells

0 · $0.00

Total Shares Bought

20,000

Total Shares Sold

0

ATEC Price Chart
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DateTypeSharesAvg PriceValueShares After
Mar 7, 2024Buy20,000$12.83$256.6K0
Quentin S. Blackford Insider Trading Activity | iRhythm Technologies, Inc. | InsiderFlow