Michael L Sherman MD
CIK 1238954 · View on SEC EDGAR ↗
Insider
First SEC filing: March 30, 2007 · Latest: March 30, 2007
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 22 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
22 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 5, 2014 | RDNT | S | 10,085 | $6.66 | $67,166 | 214,065 Direct | -4.50% | Disposed | 1042.8% (price as of 2026-08-20) |
| June 5, 2014 | RDNT | S | 16,667 | $6.67 | $111,169 | 224,150 Direct | -6.92% | Disposed | 1041.1% (price as of 2026-08-20) |
| May 12, 2009 | RDNT | P | 1,700 | $2.38 | $4,046 | 60,515 Indirect | +2.89% | Acquired | 3097.9% (price as of 2026-08-20) |
| May 12, 2009 | RDNT | P | 3,500 | $2.39 | $8,365 | 58,815 Direct | +6.33% | Acquired | 3084.5% (price as of 2026-08-20) |
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 |
|---|---|---|---|---|---|---|---|
| March 9, 2016 | RDNT | Stock Option | Common Stock (10,000) | $3.60 | March 25, 2016 | 10,000 | Disposed |
| Sept. 10, 2014 | RDNT | Stock Option | Commono Stock (25,000) | $2.12 | Jan. 4, 2015 | 25,000 | Disposed |
| March 31, 2014 | RDNT | Stock Option | Common Stock (31,250) | $2.40 | June 15, 2014 | 31,250 | Disposed |
| March 25, 2011 | RDNT | Stock Option | Common Stock (10,000) | $3.60 | March 25, 2016 | 10,000 | Acquired |
| Jan. 3, 2011 | RDNT | Common Stock | Common Stock (25,000) | $2.96 | Jan. 3, 2016 | 25,000 | Acquired |
| Jan. 4, 2010 | RDNT | Stock Option | Common Stock (25,000) | $2.12 | Jan. 4, 2015 | 25,000 | Acquired |
| June 15, 2009 | RDNT | Stock Option | Common Stock (31,250) | $2.40 | June 15, 2014 | 31,250 | Acquired |
| Jan. 2, 2009 | RDNT | Stock Option | Common Stock (25,000) | $3.65 | Jan. 2, 2014 | 25,000 | Acquired |
| Jan. 2, 2008 | RDNT | Stock Option | Common Stock (25,000) | $9.23 | Jan. 2, 2013 | 25,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.