Michael A Mesenbrink
CIK 1261545 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 25, 2008 · Latest: Aug. 25, 2008
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 6 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 22, 2008 | PDEX | A | 15,000 | $0.92 | $13,800 | 95,000 Direct | +18.75% | Acquired | 2334.8% (price as of 2026-08-20) |
| Aug. 22, 2007 | PDEX | A | 15,000 | $1.53 | $22,950 | 80,000 Direct | +23.08% | Acquired | 1364.1% (price as of 2026-08-20) |
| Aug. 28, 2006 | PDEX | A | 15,000 | $1.52 | $22,800 | 65,000 Direct | +30.00% | Acquired | 1373.7% (price as of 2026-08-20) |
| Aug. 22, 2005 | PDEX | A | 15,000 | $2.94 | $44,100 | 50,000 Direct | +42.86% | Acquired | 661.9% (price as of 2026-08-20) |
| Aug. 31, 2004 | PDEX | A | 15,000 | $2.58 | $38,700 | 35,000 Direct | +75.00% | Acquired | 768.2% (price as of 2026-08-20) |
| Aug. 27, 2003 | PDEX | A | 15,000 | $1.77 | $26,550 | 35,000 Direct | +75.00% | Acquired | 1165.5% (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 |
|---|---|---|---|---|---|---|---|
| Aug. 22, 2008 | PDEX | Director Stock Option | Pro-Dex Common Stock (15,000) | $0.92 | Aug. 21, 2018 | 15,000 | Acquired |
| Aug. 22, 2007 | PDEX | Director Stock Option | Pro-Dex Common Stock (15,000) | $1.53 | Aug. 21, 2017 | 15,000 | Acquired |
| Aug. 28, 2006 | PDEX | Director Stock Option | Pro-Dex Stock Options (15,000) | $1.52 | Aug. 27, 2016 | 15,000 | Acquired |
| Aug. 22, 2005 | PDEX | Director Stock Option | Stock Options (15,000) | $2.94 | Aug. 21, 2015 | 15,000 | Acquired |
| Aug. 31, 2004 | PDEX | Employee Stock Option | Stock Options (15,000) | $2.58 | Aug. 31, 2014 | 15,000 | Acquired |
| Aug. 27, 2003 | PDEX | Employee Stock Option | Common Stock (15,000) | $1.77 | Aug. 28, 2013 | 15,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).