Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 9 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.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
May 31, 2018 BOOM A 1,332 · · 31,647 Direct +4.39% Acquired (price as of 2026-10-02)
May 18, 2017 BOOM A 4,724 · · 30,315 Direct +18.46% Acquired (price as of 2026-10-02)
May 12, 2016 BOOM A 4,648 · · 25,591 Direct +22.19% Acquired (price as of 2026-10-02)
May 13, 2015 BOOM A 4,648 · · 20,943 Direct +28.52% Acquired (price as of 2026-10-02)
May 15, 2014 BOOM A 2,978 · · 16,295 Direct +22.36% Acquired (price as of 2026-10-02)
May 23, 2013 BOOM A 3,717 · · 13,317 Direct +38.72% Acquired (price as of 2026-10-02)
May 24, 2012 BOOM A 3,600 · · 9,600 Direct +60.00% Acquired (price as of 2026-10-02)
May 26, 2011 BOOM A 3,000 · · 6,000 Direct +100.00% Acquired (price as of 2026-10-02)
July 15, 2010 BOOM A 3,000 · · 3,000 Direct · Acquired (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.

Initial ownership (Form 3) 1 holding

07

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

DateTickerSecuritySharesOwnership
July 16, 2010 BOOM Common Stock 0 Direct