Michael N Murdock
Insider
First SEC filing: Jan. 11, 2011 · Latest: Jan. 11, 2011
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 3, 2026 | RDNT | A | 6,613 | · | · | 46,697 Direct | +16.50% | Acquired | (price as of 2026-10-02) |
| Nov. 13, 2025 | RDNT | G | 3,000 | · | · | 40,084 Direct | -6.96% | Disposed | (price as of 2026-10-02) |
| June 5, 2025 | RDNT | S | 11,132 | $58.05 | $646,213 | 43,084 Direct | -20.53% | Disposed | 20.5% (price as of 2026-10-02) |
| Jan. 8, 2025 | RDNT | A | 11,072 | · | · | 54,216 Direct | +25.66% | Acquired | (price as of 2026-10-02) |
| Dec. 2, 2024 | RDNT | G | 5,000 | · | · | 43,144 Direct | -10.39% | Disposed | (price as of 2026-10-02) |
| Aug. 21, 2024 | RDNT | S | 4,191 | $61.91 | $259,465 | 58,953 Direct | -6.64% | Disposed | 13.0% (price as of 2026-10-02) |
| Aug. 21, 2024 | RDNT | S | 9,329 | $63.06 | $588,287 | 49,624 Direct | -15.82% | Disposed | 10.9% (price as of 2026-10-02) |
| Aug. 21, 2024 | RDNT | S | 1,480 | $63.48 | $93,950 | 48,144 Direct | -2.98% | Disposed | 10.2% (price as of 2026-10-02) |
| June 12, 2024 | RDNT | S | 10,000 | $62.51 | $625,100 | 63,144 Direct | -13.67% | Disposed | 11.9% (price as of 2026-10-02) |
| June 7, 2024 | RDNT | G | 5,000 | · | · | 73,144 Direct | -6.40% | Disposed | (price as of 2026-10-02) |
| Jan. 9, 2024 | RDNT | A | 9,711 | · | · | 78,143 Direct | +14.19% | Acquired | (price as of 2026-10-02) |
| Dec. 5, 2023 | RDNT | S | 10,115 | $35.02 | $354,227 | 68,432 Direct | -12.88% | Disposed | 99.7% (price as of 2026-10-02) |
| Nov. 20, 2023 | RDNT | G | 5,000 | · | · | 78,547 Direct | -5.98% | Disposed | (price as of 2026-10-02) |
| Jan. 3, 2023 | RDNT | A | 15,790 | · | · | 83,547 Direct | +23.30% | Acquired | (price as of 2026-10-02) |
| Jan. 4, 2022 | RDNT | A | 10,000 | · | · | 67,757 Direct | +17.31% | Acquired | (price as of 2026-10-02) |
| Dec. 7, 2021 | RDNT | G | 10,000 | · | · | 57,757 Direct | -14.76% | Disposed | (price as of 2026-10-02) |
| Sept. 21, 2021 | RDNT | A | 1,837 | · | · | 67,757 Direct | +2.79% | Acquired | (price as of 2026-10-02) |
| May 27, 2021 | RDNT | S | 18,333 | $26.88 | $492,791 | 65,920 Direct | -21.76% | Disposed | 160.2% (price as of 2026-10-02) |
| Jan. 4, 2021 | RDNT | A | 10,345 | · | · | 84,253 Direct | +14.00% | Acquired | (price as of 2026-10-02) |
| Dec. 3, 2020 | RDNT | S | 16,429 | · | · | 73,908 Direct | -18.19% | Disposed | (price as of 2026-10-02) |
| Nov. 18, 2020 | RDNT | S | 10,238 | · | · | 90,337 Direct | -10.18% | Disposed | (price as of 2026-10-02) |
| Jan. 24, 2020 | RDNT | A | 10,000 | · | · | 100,575 Direct | +11.04% | Acquired | (price as of 2026-10-02) |
| Aug. 27, 2019 | RDNT | G | 10,000 | · | · | 90,575 Direct | -9.94% | Disposed | (price as of 2026-10-02) |
| June 13, 2019 | RDNT | S | 21,667 | $13.23 | $286,654 | 100,575 Direct | -17.72% | Disposed | 428.6% (price as of 2026-10-02) |
| Jan. 16, 2019 | RDNT | A | 15,000 | · | · | 122,242 Direct | +13.99% | Acquired | (price as of 2026-10-02) |
| March 14, 2018 | RDNT | S | 38,333 | $13.06 | $500,629 | 107,242 Direct | -26.33% | Disposed | 435.5% (price as of 2026-10-02) |
| Jan. 29, 2018 | RDNT | A | 15,000 | $10.15 | $152,250 | 145,575 Direct | +11.49% | Acquired | 589.0% (price as of 2026-10-02) |
| June 5, 2017 | RDNT | S | 870 | $7.40 | $6,438 | 166,066 Direct | -0.52% | Disposed | 845.0% (price as of 2026-10-02) |
| June 5, 2017 | RDNT | S | 100 | $7.42 | $742 | 165,966 Direct | -0.06% | Disposed | 842.5% (price as of 2026-10-02) |
| June 5, 2017 | RDNT | S | 1,411 | $7.35 | $10,371 | 164,555 Direct | -0.85% | Disposed | 851.4% (price as of 2026-10-02) |
| June 5, 2017 | RDNT | S | 33,680 | $7.37 | $248,222 | 130,875 Direct | -20.47% | Disposed | 848.8% (price as of 2026-10-02) |
| June 5, 2017 | RDNT | S | 870 | $7.40 | $6,438 | 166,066 Direct | -0.52% | Disposed | 845.0% (price as of 2026-10-02) |
| June 5, 2017 | RDNT | S | 100 | $7.42 | $742 | 165,966 Direct | -0.06% | Disposed | 842.5% (price as of 2026-10-02) |
| June 5, 2017 | RDNT | S | 1,411 | $7.35 | $10,371 | 164,555 Direct | -0.85% | Disposed | 851.4% (price as of 2026-10-02) |
| June 5, 2017 | RDNT | S | 33,980 | $7.37 | $250,433 | 130,575 Direct | -20.65% | Disposed | 848.8% (price as of 2026-10-02) |
| May 24, 2017 | RDNT | S | 10,900 | $7.45 | $81,205 | 166,936 Direct | -6.13% | Disposed | 838.7% (price as of 2026-10-02) |
| May 23, 2017 | RDNT | S | 25,146 | $7.45 | $187,338 | 191,182 Direct | -11.62% | Disposed | 838.7% (price as of 2026-10-02) |
| May 23, 2017 | RDNT | S | 11,793 | $7.48 | $88,212 | 179,389 Direct | -6.17% | Disposed | 834.9% (price as of 2026-10-02) |
| May 23, 2017 | RDNT | S | 1,200 | $7.50 | $9,000 | 178,189 Direct | -0.67% | Disposed | 832.4% (price as of 2026-10-02) |
| May 23, 2017 | RDNT | S | 100 | $7.53 | $753 | 178,089 Direct | -0.06% | Disposed | 828.7% (price as of 2026-10-02) |
| May 23, 2017 | RDNT | S | 253 | $7.60 | $1,923 | 177,836 Direct | -0.14% | Disposed | 820.1% (price as of 2026-10-02) |
| May 22, 2017 | RDNT | S | 6,300 | $7.60 | $47,880 | 220,428 Direct | -2.78% | Disposed | 820.1% (price as of 2026-10-02) |
| May 22, 2017 | RDNT | S | 3,400 | $7.63 | $25,942 | 217,028 Direct | -1.54% | Disposed | 816.5% (price as of 2026-10-02) |
| May 22, 2017 | RDNT | S | 700 | $7.65 | $5,355 | 216,328 Direct | -0.32% | Disposed | 814.1% (price as of 2026-10-02) |
| Feb. 1, 2017 | RDNT | A | 25,000 | · | · | 226,728 Direct | +12.39% | Acquired | (price as of 2026-10-02) |
| Jan. 12, 2016 | RDNT | A | 25,000 | · | · | 201,728 Direct | +14.15% | Acquired | (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 500 | $6.18 | $3,090 | 176,728 Direct | -0.28% | Disposed | 1031.6% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 16,702 | $6.17 | $103,051 | 177,228 Direct | -8.61% | Disposed | 1033.4% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 6,700 | $6.16 | $41,272 | 193,930 Direct | -3.34% | Disposed | 1035.2% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 4,600 | $6.15 | $28,290 | 200,630 Direct | -2.24% | Disposed | 1037.1% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 2,530 | $6.14 | $15,534 | 205,230 Direct | -1.22% | Disposed | 1038.9% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 3,200 | $6.13 | $19,616 | 207,760 Direct | -1.52% | Disposed | 1040.8% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 12,129 | $6.12 | $74,229 | 210,960 Direct | -5.44% | Disposed | 1042.6% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 1,400 | $6.11 | $8,554 | 223,089 Direct | -0.62% | Disposed | 1044.5% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 9,600 | $6.10 | $58,560 | 224,489 Direct | -4.10% | Disposed | 1046.4% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 1,300 | $6.09 | $7,917 | 234,089 Direct | -0.55% | Disposed | 1048.3% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 961 | $6.08 | $5,843 | 235,389 Direct | -0.41% | Disposed | 1050.2% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 1,039 | $6.07 | $6,307 | 236,350 Direct | -0.44% | Disposed | 1052.1% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 1,100 | $6.06 | $6,666 | 237,389 Direct | -0.46% | Disposed | 1054.0% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 700 | $6.05 | $4,235 | 238,489 Direct | -0.29% | Disposed | 1055.9% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 10,300 | $6.04 | $62,212 | 239,189 Direct | -4.13% | Disposed | 1057.8% (price as of 2026-10-02) |
| Dec. 16, 2015 | RDNT | S | 100 | $6.02 | $602 | 249,489 Direct | -0.04% | Disposed | 1061.6% (price as of 2026-10-02) |
| Dec. 11, 2015 | RDNT | S | 771 | $6.60 | $5,089 | 249,589 Direct | -0.31% | Disposed | 959.5% (price as of 2026-10-02) |
| Dec. 10, 2015 | RDNT | S | 25,000 | $6.22 | $155,500 | 250,360 Direct | -9.08% | Disposed | 1024.3% (price as of 2026-10-02) |
| Aug. 14, 2015 | RDNT | X | 50,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 14, 2015 | RDNT | F | 19,528 | · | · | 275,360 Direct | +7.63% | Acquired | (price as of 2026-10-02) |
| Aug. 14, 2015 | RDNT | M | 50,000 | · | · | 294,888 Direct | +20.42% | Acquired | (price as of 2026-10-02) |
| March 30, 2015 | RDNT | X | 100,000 | · | · | 50,000 Direct | -66.67% | Disposed | (price as of 2026-10-02) |
| March 30, 2015 | RDNT | F | 31,840 | · | · | 244,888 Direct | -11.51% | Disposed | (price as of 2026-10-02) |
| March 30, 2015 | RDNT | M | 100,000 | · | · | 276,728 Direct | +56.58% | Acquired | (price as of 2026-10-02) |
| Jan. 2, 2015 | RDNT | A | 25,000 | · | · | 176,728 Direct | +16.48% | Acquired | (price as of 2026-10-02) |
| Dec. 5, 2014 | RDNT | S | 13,800 | $8.35 | $115,230 | 151,728 Direct | -8.34% | Disposed | 737.5% (price as of 2026-10-02) |
| Dec. 4, 2014 | RDNT | S | 37,039 | $8.25 | $305,572 | 165,528 Direct | -18.28% | Disposed | 747.6% (price as of 2026-10-02) |
| June 9, 2014 | RDNT | X | 75,000 | · | · | 150,000 Direct | -33.33% | Disposed | (price as of 2026-10-02) |
| June 9, 2014 | RDNT | F | 24,161 | · | · | 202,567 Direct | -10.66% | Disposed | (price as of 2026-10-02) |
| June 9, 2014 | RDNT | M | 75,000 | · | · | 226,728 Direct | +49.43% | Acquired | (price as of 2026-10-02) |
| Jan. 2, 2014 | RDNT | A | 61,728 | · | · | 151,728 Direct | +68.59% | Acquired | (price as of 2026-10-02) |
| Jan. 2, 2013 | RDNT | A | 40,000 | · | · | 90,000 Direct | +80.00% | Acquired | (price as of 2026-10-02) |
| Jan. 3, 2012 | RDNT | A | 50,000 | · | · | 50,000 Direct | · | Acquired | (price as of 2026-10-02) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Aug. 14, 2015 | RDNT | Stock Option | Common Stock | $2.98 | Jan. 7, 2016 | 50,000 | Disposed |
| March 30, 2015 | RDNT | Stock Option | Common Stock | $2.70 | June 8, 2015 | 100,000 | Disposed |
| June 9, 2014 | RDNT | Stock Option | Common Stock | $2.40 | June 15, 2014 | 75,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 11, 2011 | RDNT | Options | 50,000 | Direct |