Blackford Quentin S. (CIK 0001612451)

Latest company ownership

Shares held
568,369
Last filed at
Jun 13, 2025
Confidence Score
50.0
2025Q4
Confidence Score History
2024Q1 2025Q4
Shares held
164,979
Last filed at
Nov 4, 2025
Confidence Score
36.2
2025Q4
Confidence Score History
2022Q4 2025Q4
DXCM - DEXCOM INC
Role: COO
Shares held
19,280
Last filed at
Sep 10, 2021
Confidence Score
50.0
2025Q4
Confidence Score History
2018Q3 2025Q4
AXGN - Axogen, Inc.
Role: Director
Shares held
3,036
Last filed at
Apr 1, 2022
Confidence Score
50.0
2025Q4
Confidence Score History
2019Q3 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Nov 3, 2025 Nov 4, 2025 iRhythm Technologies, Inc. CEO Sell 37.5 -14,059 -7.85% ✗ $2.6M
Aug 5, 2025 Aug 6, 2025 iRhythm Technologies, Inc. CEO Sell 20.0 -30,000 -14.35% ✓ $4.8M
Mar 3, 2025 Mar 4, 2025 iRhythm Technologies, Inc. CEO Sell 40.0 -8,145 -3.76% ✗ $885.9K
Feb 25, 2025 Feb 27, 2025 iRhythm Technologies, Inc. CEO Sell 100.0 +56,957 35.61% ✗ $2.5M
May 31, 2024 Nov 5, 2024 iRhythm Technologies, Inc. CEO Sell 37.5 -15,865 -9.02% ✗ $1.2M
Mar 7, 2024 Mar 8, 2024 Alphatec Holdings, Inc. Director Buy 90.0 +20,000 3.62% ✗ $256.6K
Mar 4, 2024 Mar 5, 2024 iRhythm Technologies, Inc. CEO Sell 40.0 -4,221 -2.34% ✗ $469.1K
Feb 28, 2024 Mar 1, 2024 iRhythm Technologies, Inc. CEO Sell 92.5 +6,237 3.59% ✗ $3M
Jun 6, 2023 Dec 6, 2023 iRhythm Technologies, Inc. CEO Buy 92.5 +9,755 8.21% ✓ $997.6K
Nov 2, 2022 Nov 4, 2022 iRhythm Technologies, Inc. CEO Sell 37.5 -12,699 -12.45% ✗ $1.6M
Sep 8, 2021 Sep 10, 2021 DEXCOM INC COO Sell 2.5 -18,662 -49.19% ✓ $10.2M
May 28, 2021 Jun 1, 2021 DEXCOM INC COO Sell 15.0 -7,223 -15.99% ✓ $2.7M
Mar 10, 2021 Mar 12, 2021 DEXCOM INC CFO Sell 37.5 -6,509 -12.60% ✗ $2.4M
Sep 9, 2020 Sep 11, 2020 DEXCOM INC CFO Sell 2.5 -25,079 -36.24% ✓ $10M
Aug 9, 2019 Jun 5, 2020 Axogen, Inc. Director Buy 95.0 +15,535 100.00% ✗ $217.7K
Mar 11, 2020 Mar 13, 2020 DEXCOM INC CFO Sell 15.0 -12,561 -15.36% ✓ $3.1M
Mar 8, 2020 Mar 10, 2020 DEXCOM INC CFO Sell 95.0 +11,836 16.93% ✓ $232.6K
Sep 10, 2019 Sep 12, 2019 DEXCOM INC CFO Sell 20.0 -10,320 -12.89% ✓ $1.5M
Sep 9, 2019 Sep 11, 2019 DEXCOM INC CFO Sell 37.5 -11,686 -12.74% ✗ $1.8M
Aug 9, 2019 Aug 13, 2019 Axogen, Inc. Director Buy 95.0 +15,535 64.91% ✗ $217.7K
May 29, 2019 May 30, 2019 DEXCOM INC CFO Sell 23.8 -8,874 -8.82% ✓ $1.1M
Mar 12, 2019 Mar 13, 2019 DEXCOM INC CFO Sell 40.0 -5,358 -5.06% ✗ $765.1K
Sep 11, 2018 Sep 13, 2018 DEXCOM INC CFO Sell 23.8 -8,440 -8.83% ✓ $1.2M
Sep 10, 2018 Sep 12, 2018 DEXCOM INC CFO Sell 37.5 -7,149 -6.96% ✗ $1M