Christopher Vanderhook

CIK 1843104 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 9, 2021 · Latest: June 18, 2026

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Insider at

Insider transactions

0 buys (P) 7 sells (S) Net: $-377,594 + 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
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
July 23, 2026 DSP S 10b5-1 4,304 $10.47 $45,063 0 Indirect -100.00% Disposed 22.8% (price as of 2026-08-19)
July 22, 2026 DSP S 10b5-1 5,000 $11.03 $55,150 4,304 Indirect -53.74% Disposed 16.6% (price as of 2026-08-19)
July 21, 2026 DSP S 10b5-1 3,196 $11.70 $37,393 9,304 Indirect -25.57% Disposed 9.9% (price as of 2026-08-19)
June 18, 2026 DSP S 10b5-1 2,500 $10.96 $27,400 0 Indirect -100.00% Disposed 17.3% (price as of 2026-08-19)
June 17, 2026 DSP S 10b5-1 5,000 $11.09 $55,450 2,500 Indirect -66.67% Disposed 16.0% (price as of 2026-08-19)
June 16, 2026 DSP S 10b5-1 5,000 $11.17 $55,850 7,500 Indirect -40.00% Disposed 15.1% (price as of 2026-08-19)
June 15, 2026 DSP S 9,125 $11.10 $101,288 293,880 Direct -3.01% Disposed 15.9% (price as of 2026-08-19)
Feb. 10, 2021 DSP S 303,411 $25.00 $7,585,275 0 Indirect -100.00% Disposed -48.6% (price as of 2026-08-19)
Feb. 10, 2021 DSP S 250,625 $25.00 $6,265,625 0 Direct -100.00% Disposed -48.6% (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
July 21, 2026 DSP Class B Units Class A Common Stock (12,500) — — 12,500 Disposed
June 16, 2026 DSP Class B Units Class A Common Stock (12,500) — — 12,500 Disposed
March 7, 2023 DSP Non-qualified Stock Option (Right to Buy) Class A Common Stock (381,632) $4.44 March 7, 2033 381,632 Acquired
March 15, 2022 DSP Non-qualified Stock Option (Right to Buy) Class A Common Stock (472,813) $6.00 March 15, 2032 472,813 Acquired
Feb. 10, 2021 DSP Class B Units Class A Common Stock (303,411) $0.00 — 303,411 Disposed
Feb. 10, 2021 DSP Class B Units Class A Common Stock (250,625) $0.00 — 250,625 Disposed

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

Initial ownership (Form 3) 4 holdings

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

Date Ticker Security Shares Ownership
Feb. 9, 2021 DSP Class B Common Stock 8,084,399 Direct
Feb. 9, 2021 DSP Class B Common Stock 9,787,112 Indirect
Feb. 9, 2021 DSP Class B Units→ Class A Common Stock (8,084,399) 8,084,399 Direct
Feb. 9, 2021 DSP Class B Units→ Class A Common Stock (9,787,112) 9,787,112 Indirect

Compensation (DEF 14A)

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

DSP

Chief OperatingOfficer and Director
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2025 — — — — $776,636 — $30,000 $1,506,636
2024 — — $1,932,177 — $894,345 — — $4,169,668
2023 — — $800,000 — $849,690 — — $3,569,690

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