David A. Clark
Insider
First SEC filing: Aug. 26, 2008 · Latest: Aug. 26, 2008
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 |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 1, 2019 | MD | F | 10,625 | $26.12 | $277,525 | 123,032 Direct | -7.95% | Disposed | -0.6% (price as of 2026-10-02) |
| June 1, 2019 | MD | F | 3,307 | $24.66 | $81,551 | 133,657 Direct | -2.41% | Disposed | 5.3% (price as of 2026-10-02) |
| March 1, 2019 | MD | S 10b5-1 | 6,452 | $32.90 | $212,271 | 136,964 Direct | -4.50% | Disposed | -21.1% (price as of 2026-10-02) |
| Feb. 12, 2019 | MD | A | 56,571 | · | · | 143,416 Direct | +65.14% | Acquired | (price as of 2026-10-02) |
| Dec. 1, 2018 | MD | A | 54,000 | · | · | 86,845 Direct | +164.41% | Acquired | (price as of 2026-10-02) |
| June 1, 2018 | MD | S 10b5-1 | 11,607 | $45.15 | $524,056 | 32,845 Direct | -26.11% | Disposed | -42.5% (price as of 2026-10-02) |
| March 1, 2018 | MD | A | 19,352 | · | · | 44,452 Direct | +77.10% | Acquired | (price as of 2026-10-02) |
| Dec. 7, 2017 | MD | A | 14,741 | · | · | 14,741 Direct | · | Acquired | (price as of 2026-10-02) |
| June 1, 2017 | MD | S 10b5-1 | 10,202 | $54.99 | $561,008 | 25,100 Direct | -28.90% | Disposed | -52.8% (price as of 2026-10-02) |
| June 1, 2017 | MD | A | 15,277 | · | · | 35,302 Direct | +76.29% | Acquired | (price as of 2026-10-02) |
| June 1, 2016 | MD | A | 9,928 | · | · | 31,495 Direct | +46.03% | Acquired | (price as of 2026-10-02) |
| June 1, 2016 | MD | S | 11,470 | $67.78 | $777,437 | 20,025 Direct | -36.42% | Disposed | -61.7% (price as of 2026-10-02) |
| June 1, 2015 | MD | S 10b5-1 | 14,654 | $70.48 | $1,032,814 | 21,567 Direct | -40.46% | Disposed | -63.2% (price as of 2026-10-02) |
| June 1, 2015 | MD | A | 9,615 | · | · | 36,221 Direct | +36.14% | Acquired | (price as of 2026-10-02) |
| June 2, 2014 | MD | S 10b5-1 | 16,230 | $57.00 | $925,110 | 26,606 Direct | -37.89% | Disposed | -54.4% (price as of 2026-10-02) |
| June 1, 2014 | MD | A | 11,062 | · | · | 42,836 Direct | +34.81% | Acquired | (price as of 2026-10-02) |
| June 3, 2013 | MD | S 10b5-1 | 8,645 | $91.01 | $786,781 | 15,887 Direct | -35.24% | Disposed | -42.9% (price as of 2026-10-02) |
| June 1, 2013 | MD | A | 6,867 | · | · | 24,532 Direct | +38.87% | Acquired | (price as of 2026-10-02) |
| Nov. 23, 2012 | MD | M | 2,019 | $57.09 | $115,265 | 19,684 Direct | +11.43% | Acquired | -9.0% (price as of 2026-10-02) |
| Nov. 23, 2012 | MD | S 10b5-1 | 2,019 | $77.16 | $155,786 | 17,665 Direct | -10.26% | Disposed | -32.7% (price as of 2026-10-02) |
| Nov. 23, 2012 | MD | M | 2,019 | $57.09 | $115,265 | 0 Direct | -100.00% | Disposed | -9.0% (price as of 2026-10-02) |
| Nov. 20, 2012 | MD | M | 600 | $57.09 | $34,254 | 2,019 Direct | -22.91% | Disposed | -9.0% (price as of 2026-10-02) |
| Nov. 20, 2012 | MD | S 10b5-1 | 600 | $77.10 | $46,260 | 17,665 Direct | -3.28% | Disposed | -32.6% (price as of 2026-10-02) |
| Nov. 20, 2012 | MD | M | 600 | $57.09 | $34,254 | 18,265 Direct | +3.40% | Acquired | -9.0% (price as of 2026-10-02) |
| Nov. 7, 2012 | MD | M | 9,881 | $57.09 | $564,106 | 2,619 Direct | -79.05% | Disposed | -9.0% (price as of 2026-10-02) |
| Nov. 7, 2012 | MD | S 10b5-1 | 9,881 | $77.12 | $762,023 | 17,665 Direct | -35.87% | Disposed | -32.7% (price as of 2026-10-02) |
| Nov. 7, 2012 | MD | M | 9,881 | $57.09 | $564,106 | 27,546 Direct | +55.94% | Acquired | -9.0% (price as of 2026-10-02) |
| June 1, 2012 | MD | S 10b5-1 | 9,152 | $59.89 | $548,113 | 17,665 Direct | -34.13% | Disposed | -13.3% (price as of 2026-10-02) |
| June 1, 2012 | MD | A | 9,582 | · | · | 26,817 Direct | +55.60% | Acquired | (price as of 2026-10-02) |
| Feb. 27, 2012 | MD | M | 4,100 | $55.43 | $227,263 | 0 Direct | -100.00% | Disposed | -6.3% (price as of 2026-10-02) |
| Feb. 27, 2012 | MD | S 10b5-1 | 4,100 | $75.50 | $309,550 | 17,235 Direct | -19.22% | Disposed | -31.2% (price as of 2026-10-02) |
| Feb. 27, 2012 | MD | M | 4,100 | $55.43 | $227,263 | 21,335 Direct | +23.79% | Acquired | -6.3% (price as of 2026-10-02) |
| Feb. 24, 2012 | MD | M | 9,700 | $55.43 | $537,671 | 4,100 Direct | -70.29% | Disposed | -6.3% (price as of 2026-10-02) |
| Feb. 24, 2012 | MD | S 10b5-1 | 9,700 | $75.45 | $731,865 | 17,235 Direct | -36.01% | Disposed | -31.2% (price as of 2026-10-02) |
| Feb. 24, 2012 | MD | M | 9,700 | $55.43 | $537,671 | 26,935 Direct | +56.28% | Acquired | -6.3% (price as of 2026-10-02) |
| June 2, 2011 | MD | S 10b5-1 | 8,188 | $73.62 | $602,801 | 17,235 Direct | -32.21% | Disposed | -29.4% (price as of 2026-10-02) |
| June 1, 2011 | MD | A | 7,895 | · | · | 25,423 Direct | +45.04% | Acquired | (price as of 2026-10-02) |
| May 20, 2011 | MD | M | 1,200 | $55.43 | $66,516 | 8,800 Direct | +15.79% | Acquired | -6.3% (price as of 2026-10-02) |
| May 20, 2011 | MD | S 10b5-1 | 1,200 | $75.44 | $90,528 | 17,528 Direct | -6.41% | Disposed | -31.2% (price as of 2026-10-02) |
| May 20, 2011 | MD | M | 1,200 | $55.43 | $66,516 | 18,728 Direct | +6.85% | Acquired | -6.3% (price as of 2026-10-02) |
| Dec. 10, 2010 | MD | M | 7,456 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Dec. 10, 2010 | MD | S 10b5-1 | 7,456 | $64.75 | $482,776 | 17,528 Direct | -29.84% | Disposed | -19.8% (price as of 2026-10-02) |
| Dec. 10, 2010 | MD | M | 7,456 | $44.70 | $333,283 | 24,984 Direct | +42.54% | Acquired | 16.2% (price as of 2026-10-02) |
| Dec. 2, 2010 | MD | M | 2,960 | · | · | 7,456 Direct | -28.42% | Disposed | (price as of 2026-10-02) |
| Dec. 2, 2010 | MD | S 10b5-1 | 2,960 | $64.72 | $191,571 | 17,528 Direct | -14.45% | Disposed | -19.7% (price as of 2026-10-02) |
| Dec. 2, 2010 | MD | M | 2,960 | $44.70 | $132,312 | 20,488 Direct | +16.89% | Acquired | 16.2% (price as of 2026-10-02) |
| June 1, 2010 | MD | A | 8,461 | · | · | 17,528 Direct | +93.32% | Acquired | (price as of 2026-10-02) |
| June 1, 2010 | MD | S 10b5-1 | 6,755 | $55.94 | $377,875 | 9,067 Direct | -42.69% | Disposed | -7.2% (price as of 2026-10-02) |
| June 1, 2009 | MD | A | 11,100 | · | · | 15,822 Direct | +235.07% | Acquired | (price as of 2026-10-02) |
| June 1, 2009 | MD | S 10b5-1 | 4,792 | $40.51 | $194,124 | 4,722 Direct | -50.37% | Disposed | 28.2% (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 |
|---|---|---|---|---|---|---|---|
| Dec. 7, 2017 | MD | Restricted Shares Units [F1] | Common Stock | · | May 15, 2020 | 14,741 | Acquired |
| Nov. 23, 2012 | MD | Stock Options (Right to Buy) | Common Stock | $57.09 | June 1, 2017 | 2,019 | Disposed |
| Nov. 20, 2012 | MD | Stock Options (Right to Buy) | Common Stock | $57.09 | June 1, 2017 | 600 | Disposed |
| Nov. 7, 2012 | MD | Stock Options (Right to Buy) | Common Stock | $57.09 | June 1, 2017 | 9,881 | Disposed |
| Feb. 27, 2012 | MD | Stock Options (Right to Buy) | Common Stock | $55.43 | June 2, 2018 | 4,100 | Disposed |
| Feb. 24, 2012 | MD | Stock Options (Right to Buy) | Common Stock | $55.43 | June 2, 2018 | 9,700 | Disposed |
| May 20, 2011 | MD | Employee Stock Options (Right to Buy) [F3] | Common Stock | $55.43 | June 2, 2018 | 1,200 | Acquired |
| Dec. 10, 2010 | MD | Stock Options | Common Stock | $44.70 | June 1, 2016 | 7,456 | Disposed |
| Dec. 2, 2010 | MD | Stock Options | Common Stock | $44.70 | June 1, 2016 | 2,960 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 20 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Aug. 26, 2008 | MD | Common Stock | 9,514 | Direct |
| Aug. 26, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 26, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 26, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 25, 2008 | MD | Common Stock | 1,736 | Direct |
| Aug. 25, 2008 | MD | Common Stock | 4,514 | Direct |
| Aug. 25, 2008 | MD | Common Stock | 9,514 | Direct |
| Aug. 25, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 25, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 25, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 25, 2008 | MD | Common Stock | 19,028 | Direct |
| Aug. 25, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 25, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 25, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 21, 2008 | MD | Common Stock | 1,736 | Direct |
| Aug. 21, 2008 | MD | Common Stock | 4,514 | Direct |
| Aug. 21, 2008 | MD | Common Stock | 9,514 | Direct |
| Aug. 21, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 21, 2008 | MD | Stock Options (Right to buy) | · | Direct |
| Aug. 21, 2008 | MD | Stock Options (Right to buy) | · | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2018 | $483,333 | · | · | · | $234,150 | · | $11,288 | $3,949,611 |
| 2017 | $450,000 | · | · | · | $337,500 | · | $18,266 | $2,405,800 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.