IRTC
ATEC
AXGN
DXCM

Quentin S. Blackford

Known title: DirectorCIK: 0001612451

Quentin S. Blackford's purchase track record

Quentin S. Blackford has only 1 open-market purchase with a full 6 months of price history after it -- too few to call a track record yet.

PurchaseStockAmount3 months6 months
3/7/2024ATEC$257K-20.4%-48.4%

Computed by MarketWall from SEC Form 4 filings and daily closing prices (close on the purchase date to the close about 3 and 6 months later). Companies that have since delisted are not included. Past results, not investment advice.

Associated companies

AI Market Commentary

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October 10, 2026

iRhythm Reports Data Breach and Completes VitalConnect Acquisition. iRhythm disclosed unauthorized access to patient data, a significant security event for a healthcare company. The firm also completed the acquisition of VitalConnect to expand its cardiac monitoring platform across various care settings. Analyst views remain mixed, with Wells Fargo lowering its price target to $150 while Needham raised its target to $194.

this person other insiders at IRTC

AI Market Commentary

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September 25, 2026

Alphatec Appoints Tommy Carls as EVP for Data Intelligence. Alphatec Holdings has named Tommy Carls as Executive Vice President of Data Intelligence and Strategy. This leadership addition focuses on the company's data capabilities and strategic direction. The stock is currently trading within its 52-week range, with analyst targets averaging $15.79.

this person other insiders at ATEC

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October 12, 2026

Axogen Receives New Analyst Coverage and Valuation Upside. Axogen has attracted new analyst coverage from Robinhood and B of A Securities, both issuing bullish notes and setting price targets around $52. A Yahoo analysis suggests the stock may be about 26% undervalued on cash‑flow grounds, while the company has fallen 22.6% in the past month. These developments highlight renewed investor interest and potential upside relative to recent price action.

this person other insiders at AXGN

AI Market Commentary

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October 17, 2026

DexCom CONNECT study published in NEJM. The New England Journal of Medicine published the DexCom CONNECT study, which supports using continuous glucose monitoring for people with Type 2 diabetes who do not take insulin. This finding expands the potential user base for DexCom's devices beyond insulin-dependent patients. The stock recently showed pre-market activity, and analysts maintain an average target price of $96.46.

this person other insiders at DXCM

Transaction History

IRTC▼ Sell$3.3M
IRTC▲ Buy$0
ATEC▲ Buy$0
IRTC▲ Buy$17K
IRTC▼ Sell$558K
IRTC▼ Sell$519K
IRTC▼ Sell$697K
IRTC▲ Buy$0
IRTC▼ Sell$3.5M
IRTC▲ Buy$0
IRTC▼ Sell$2.6M
IRTC▼ Sell$259K
IRTC▼ Sell$247K
IRTC▼ Sell$1.6M
IRTC▼ Sell$1.4M
IRTC▼ Sell$520K
IRTC▼ Sell$50K
IRTC▼ Sell$788K
ATEC▲ Buy$0
IRTC▲ Buy$21K
ATEC▼ Sell$0
IRTC▼ Sell$886K
IRTC▲ Buy$0
IRTC▼ Sell$2.5M
IRTC▲ Buy$0
ATEC▼ Sell$0
IRTC▼ Sell$1.2M
ATEC▲ Buy$0
IRTC▲ Buy$21K
ATEC▲ Buy$257K
IRTC▼ Sell$469K
IRTC▼ Sell$3.0M
IRTC▲ Buy$0
IRTC▲ Buy$0
ATEC▲ Buy$0
IRTC▲ Buy$998K
IRTC▲ Buy$0
IRTC▼ Sell$1.5M
IRTC▼ Sell$34K
ATEC▲ Buy$0
AXGN▲ Buy$0
IRTC▲ Buy$0
DXCM▼ Sell$848K
DXCM▼ Sell$10K
DXCM▼ Sell$279K
DXCM▼ Sell$830K
DXCM▼ Sell$163K
DXCM▼ Sell$54K
DXCM▼ Sell$55K
DXCM▼ Sell$493K
DXCM▼ Sell$658K
DXCM▼ Sell$1.3M
DXCM▼ Sell$1.2M
DXCM▼ Sell$110K
DXCM▼ Sell$23K
DXCM▼ Sell$4.2M

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