Herbert M Gardner

CIK 923414 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 10, 2010 · Latest: Feb. 11, 2011

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 31 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

31 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
May 2, 2012 DWSN S 500 $11.45 $5,725 621,644 Direct -0.08% Disposed -91.7% (price as of 2026-08-19)
May 8, 2006 DWSN S 20,000 $15.11 $302,200 511,960 Direct -3.76% Disposed -91.9% (price as of 2026-08-19)
May 5, 2006 DWSN S 15,000 $15.10 $226,500 531,960 Direct -2.74% Disposed -91.9% (price as of 2026-08-19)
May 5, 2006 DWSN S 9,500 $15.00 $142,500 546,960 Direct -1.71% Disposed -91.9% (price as of 2026-08-19)
May 4, 2006 DWSN S 14,500 $15.10 $218,950 556,460 Direct -2.54% Disposed -91.9% (price as of 2026-08-19)
May 3, 2006 DWSN S 6,000 $15.17 $91,020 570,960 Direct -1.04% Disposed -92.0% (price as of 2026-08-19)
May 2, 2006 DWSN S 12,834 $15.00 $192,510 60,040 Indirect -17.61% Disposed -91.9% (price as of 2026-08-19)
May 2, 2006 DWSN S 12,900 $14.75 $190,275 72,874 Indirect -15.04% Disposed -91.7% (price as of 2026-08-19)
May 2, 2006 DWSN S 15,000 $14.81 $222,150 576,960 Direct -2.53% Disposed -91.8% (price as of 2026-08-19)
May 1, 2006 DWSN S 600 $14.62 $8,772 85,774 Indirect -0.69% Disposed -91.7% (price as of 2026-08-19)
Oct. 12, 2005 DWSN S 162,329 — — 0 Direct -100.00% Disposed (price as of 2026-08-19)
Oct. 12, 2005 DWSN S 371,000 — — 0 Direct -100.00% Disposed (price as of 2026-08-19)
Oct. 12, 2005 DWSN S 200,000 — — 0 Direct -100.00% Disposed (price as of 2026-08-19)
Dec. 15, 2004 DWSN P 1,733 $1.50 $2,600 1,733 Indirect — Acquired -14.6% (price as of 2026-08-19)
Feb. 23, 2004 DWSN P 47,000 $0.53 $24,910 47,000 Indirect — Acquired 141.6% (price as of 2026-08-19)
Feb. 23, 2004 DWSN P 188,500 $0.53 $99,905 188,500 Direct — Acquired 141.6% (price as of 2026-08-19)
Feb. 23, 2004 DWSN P 188,500 $0.53 $99,905 188,500 Direct — Acquired 141.6% (price as of 2026-08-19)
Feb. 23, 2004 DWSN P 47,000 $0.53 $24,910 47,000 Indirect — Acquired 141.6% (price as of 2026-08-19)

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
Oct. 3, 2014 DWSN Nonqualified Stock Option Common Stock (21,979) $3.52 Dec. 3, 2014 21,979 Disposed
July 31, 2014 DWSN Nonqualified Stock Option Common Stock (37,500) $3.93 July 30, 2019 37,500 Acquired
Dec. 18, 2013 DWSN Nonqualified Stock Option Common Stock (19,797) $7.18 Dec. 18, 2018 19,797 Acquired
Sept. 13, 2013 DWSN Nonqualified Stock Option Common Stock — Oct. 22, 2013 26,812 Disposed
Aug. 7, 2012 DWSN Nonqualified Stock Option Common Stock (18,750) $5.88 Aug. 6, 2017 18,750 Acquired
March 7, 2012 DWSN Nonqualified Stock Option Common Stock (10,989) $8.38 Sept. 19, 2012 10,989 Disposed
Nov. 21, 2011 DWSN Nonqualified Stock Option Common Stock (16,837) $6.32 Nov. 20, 2016 16,837 Acquired
Dec. 4, 2009 DWSN Nonqualified Stock Option Common Stock (18,987) $4.07 Dec. 3, 2014 18,987 Acquired
Oct. 23, 2008 DWSN Nonqualified Stock Option Common Stock (22,059) $3.41 Oct. 22, 2013 22,059 Acquired
Sept. 19, 2007 DWSN Nonqualified Stock Option Common Stock — Sept. 18, 2012 9,493 Acquired
April 25, 2006 DWSN Stock Option (reload) Common Stock (1,465) $6.81 Oct. 10, 2010 70 Acquired
April 25, 2006 DWSN Warrants (Series C2) Common Stock (1,820) $0.95 Dec. 15, 2007 87 Acquired
Oct. 12, 2005 DWSN 8-1/2% Sr Convertible Preferred Stock Common Stock — — 47,000 Disposed
Oct. 12, 2005 DWSN 8-1/2% Sr Convertible Preferred Stock Common Stock (188,500) — — 188,500 Disposed
Oct. 12, 2005 DWSN Warrants (Series A2) Common Stock $0.20 June 11, 2003 162,329 Disposed
Oct. 12, 2005 DWSN Warrants (Series A) Common Stock $0.20 Sept. 10, 2012 371,000 Disposed
Oct. 12, 2005 DWSN Warrants Common Stock (200,000) $0.30 July 31, 2009 200,000 Disposed
Oct. 11, 2005 DWSN Non-Statutory Stock Option Common Stock (10,000) $1.00 Dec. 11, 2005 10,000 Disposed
Dec. 15, 2004 DWSN Warrants (Series C2) Common Stock (1,733) $1.00 Dec. 15, 2007 1,733 Acquired
Feb. 23, 2004 DWSN 8-1/2% Senior Convertible Preferred Stock Common Stock (47,000) — — 47,000 Acquired
Feb. 23, 2004 DWSN 8-1/2% Senior Convertible Preferred Stock Common Stock (188,500) — — 188,500 Acquired
Feb. 23, 2004 DWSN 8-1/2% Senior Convertible Preferred Stock Common Stock (188,500) — — 188,500 Acquired
Feb. 23, 2004 DWSN 8-1/2% Senior Convertible Preferred Stock Common Stock (47,000) — — 47,000 Acquired
June 12, 2003 DWSN Series A2 Warrants Common Stock (150,000) $0.20 June 12, 2013 150,000 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).