Michelle H Shepston

CIK 1683699 · View on SEC EDGAR ↗

Insider

First SEC filing: June 3, 2026 · Latest: June 8, 2026

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Insider transactions

2 buys (P) 0 sells (S) Net: $68,378 + 74 non-open-market transactions below Avg return of open purchases vs now: 40.1% 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

74 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
June 5, 2026 SSMR P 65 $13.50 $878 65 Indirect — Acquired 40.1% (price as of 2026-08-21)
June 5, 2026 SSMR P 5,000 $13.50 $67,500 5,000 Direct — Acquired 40.1% (price as of 2026-08-21)
Feb. 25, 2021 BOOM S 1,461 $65.06 $95,053 15,847 Direct -8.44% Disposed -89.0% (price as of 2026-08-21)
Nov. 16, 2020 BOOM S 3,000 $40.17 $120,510 15,097 Direct -16.58% Disposed -82.2% (price as of 2026-08-21)
Aug. 11, 2020 BOOM S 3,000 $35.68 $107,040 18,097 Direct -14.22% Disposed -80.0% (price as of 2026-08-21)

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
March 2, 2025 BOOM Performance Share Units Common Stock (3,230) — — 3,230 Disposed
March 1, 2025 BOOM Deferred Stock Common Stock (319) — — 319 Disposed
Feb. 26, 2025 BOOM Performance Share Units Common Stock (24,006) — — 24,006 Acquired
March 1, 2024 BOOM Deferred Stock Common Stock (318) — — 318 Disposed
Feb. 28, 2024 BOOM Performance Share Units Common Stock (10,336) — — 10,336 Acquired
Feb. 23, 2024 BOOM Performance Share Units Common Stock (958) — — 958 Disposed
March 14, 2023 BOOM Performance Share Units Common Stock (8,263) — — 8,263 Acquired
March 1, 2023 BOOM Deferred Stock Common Stock (318) — — 318 Disposed
Feb. 26, 2023 BOOM Deferred Stock Common Stock (132) — — 132 Disposed
March 2, 2022 BOOM Performance Share Units Common Stock (6,460) — — 6,460 Acquired
March 2, 2022 BOOM Performance Share Units Common Stock (6,460) — — 6,460 Acquired
Feb. 26, 2022 BOOM Deferred Stock Common Stock (125) — — 125 Disposed
Feb. 26, 2022 BOOM Performance Share Units Common Stock (47) — — 47 Disposed
Feb. 26, 2022 BOOM Deferred Stock Common Stock (119) — — 119 Disposed
Feb. 27, 2021 BOOM Performance Share Units Common Stock (6,000) — — 6,000 Acquired
Feb. 26, 2021 BOOM Deferred Stock Common Stock (43) — — 43 Disposed
Feb. 26, 2021 BOOM Deferred Stock Common Stock (133) — — 133 Disposed
Feb. 23, 2021 BOOM Performance Share Units Common Stock (1,918) — — 1,918 Acquired
Feb. 26, 2020 BOOM Deferred Stock Common Stock (37) — — 37 Disposed
Feb. 26, 2020 BOOM Performance Share Units Common Stock (3,443) — — 3,443 Acquired
Feb. 26, 2020 BOOM Deferred Stock Common Stock (3,443) — — 3,443 Acquired
Feb. 22, 2020 BOOM Performance Share Units Common Stock (6,000) — — 6,000 Disposed

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

Initial ownership (Form 3) 1 holding

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

Date Ticker Security Shares Ownership
June 3, 2026 SSMR Stock Option (Right to Buy)→ Common Stock (650,000) 650,000 Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

BOOM

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2018 $270,000 — $215,895 — $162,000 — $37,635 $685,530
2017 $260,000 — $148,425 — $106,496 — $26,811 $541,732
2016 $90,000 — — — $35,519 — $3,789 $242,208

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.