Klaas De Boer

CIK 1845960 · View on SEC EDGAR ↗

Insider

First SEC filing: April 11, 2022 · Latest: April 11, 2022

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Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 8 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

8 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
June 22, 2023 SMTK P 200,000 — — 200,000 Indirect — Acquired (price as of 2026-08-21)
June 22, 2023 SMTK P 50 $1000.00 $50,000 50 Indirect — Acquired -99.5% (price as of 2026-08-21)
Feb. 23, 2021 SMTK P 200,000 $2.00 $400,000 200,000 Indirect — Acquired 152.5% (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
Sept. 3, 2025 SMTK Stock Option (right to buy) Common Stock (22,466) $1.16 Sept. 3, 2035 22,466 Acquired
May 30, 2024 SMTK Series A-2 Convertible Preferred Stock Common Stock (5,715) $8.75 — 50 Disposed
June 22, 2023 SMTK Common Stock Warrants (right to buy) Common Stock (200,000) — — 200,000 Acquired
June 22, 2023 SMTK Series A-2 Convertible Preferred Stock Common Stock (200,000) — — 50 Acquired
July 8, 2022 SMTK Stock option (right to buy) Common Stock (6,000) $2.00 July 8, 2032 6,000 Acquired
March 31, 2021 SMTK Stock option (right to buy) Common Stock (18,000) $2.00 March 31, 2031 18,000 Acquired
March 31, 2021 SMTK Stock option (right to buy) Common Stock (18,000) $2.00 March 31, 2031 18,000 Acquired

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

Initial ownership (Form 3) 15 holdings

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

Date Ticker Security Shares Ownership
July 20, 2026 GFUZ Stock Option (right to buy)→ Common Shares (856) 856 Direct
July 20, 2026 GFUZ Stock Option (right to buy)→ Common Shares (4,276) 4,276 Direct
July 20, 2026 GFUZ Stock Option (right to buy)→ Common Shares (1,283) 1,283 Direct
July 20, 2026 GFUZ Stock Option (right to buy)→ Common Shares (856) 856 Direct
July 20, 2026 GFUZ Stock Option (right to buy)→ Common Shares (1,711) 1,711 Direct
July 20, 2026 GFUZ Stock Option (right to buy)→ Common Shares (5,131) 5,131 Direct
July 20, 2026 GFUZ Stock Option (right to buy)→ Common Shares (153,459) 153,459 Direct
July 20, 2026 GFUZ Stock Option (right to buy)→ Common Shares (29,074) 29,074 Direct
July 20, 2026 GFUZ Earnout Options (right to buy)→ Earnout Shares (1,068) 1,068 Direct
July 20, 2026 GFUZ Earnout Options (right to buy)→ Earnout Shares (267) 267 Direct
July 20, 2026 GFUZ Earnout Options (right to buy)→ Earnout Shares (178) 178 Direct
July 20, 2026 GFUZ Earnout Options (right to buy)→ Earnout Shares (356) 356 Direct
July 20, 2026 GFUZ Earnout Options (right to buy)→ Earnout Shares (1,068) 1,068 Direct
July 20, 2026 GFUZ Earnout Options (right to buy)→ Earnout Shares (31,970) 31,970 Direct
July 20, 2026 GFUZ Earnout Options (right to buy)→ Earnout Shares (6,056) 6,056 Direct