Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 17 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

17 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
Aug. 14, 2023 BOOM S 4,000 $22.94 $91,760 14,881 Direct -21.19% Disposed -74.5% (price as of 2026-10-05)
June 16, 2023 BOOM S 2,000 $16.09 $32,180 18,881 Direct -9.58% Disposed -63.7% (price as of 2026-10-05)
March 18, 2022 BOOM S 1,000 $34.58 $34,580 13,795 Direct -6.76% Disposed -83.1% (price as of 2026-10-05)
May 4, 2020 BOOM S 1,000 $24.12 $24,120 14,795 Direct -6.33% Disposed -75.8% (price as of 2026-10-05)
May 23, 2019 BOOM S 1,000 $65.44 $65,440 32,243 Direct -3.01% Disposed -91.1% (price as of 2026-10-05)
June 5, 2018 BOOM S 1,000 $44.87 $44,870 32,147 Direct -3.02% Disposed -87.0% (price as of 2026-10-05)
May 24, 2016 BOOM S 800 $10.57 $8,456 17,795 Direct -4.30% Disposed -44.7% (price as of 2026-10-05)
Dec. 21, 2015 BOOM S 1,200 $6.12 $7,344 18,595 Direct -6.06% Disposed -4.6% (price as of 2026-10-05)
May 4, 2015 BOOM S 2,000 $13.26 $26,520 19,795 Direct -9.18% Disposed -56.0% (price as of 2026-10-05)
Dec. 1, 2014 BOOM S 1,300 $15.95 $20,735 21,795 Direct -5.63% Disposed -63.4% (price as of 2026-10-05)
March 25, 2011 BOOM S 1,700 $25.90 $44,030 9,800 Direct -14.78% Disposed -77.5% (price as of 2026-10-05)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
May 11, 2022 BOOM Deferred Stock Common Stock (5,006) · · 5,006 Acquired
May 12, 2021 BOOM Deferred Stock Common Stock (1,888) · · 1,888 Acquired
May 20, 2020 BOOM Deferred Stock Common Stock (4,211) · · 4,211 Acquired
May 12, 2016 BOOM Deferred Stock Common Stock (4,648) · · 4,648 Acquired
May 13, 2015 BOOM Deferred Stock Common Stock (4,648) · · 4,648 Acquired

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

Initial ownership (Form 3) 1 holding

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
June 11, 2007 BOOM Common Stock 3,000 Direct