John Todd Koning
CIK 1830843 · View on SEC EDGAR ↗
First SEC filing: April 21, 2021 · Latest: April 21, 2021
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Dec. 16, 2021 | ATEC | P | 5,000 | $11.17 | $55,850 | 196,682 Direct | +2.61% | Acquired | -14.0% (price as of 2026-08-20) |
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 |
|---|---|---|---|---|---|---|---|
| Feb. 26, 2021 | MASI | Non-Qualified Stock Option (Right to Buy) | Common Stock (1,483) | $250.73 | Feb. 26, 2031 | 1,483 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 5 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| April 21, 2021 | ATEC | No securities are beneficially owned | 0 | Direct |
| Nov. 5, 2020 | MASI | Non-Qualified Stock Option (Right to Buy)→ Common Stock (12,000) | 12,000 | Direct |
| Nov. 5, 2020 | MASI | Non-Qualified Stock Option (Right to Buy)→ Common Stock (3,316) | 3,316 | Direct |
| Nov. 5, 2020 | MASI | Restricted Stock Units→ Common Stock (2,397) | 2,397 | Direct |
| Nov. 5, 2020 | MASI | Restricted Stock Units→ Common Stock (1,477) | 1,477 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $480,775 | — | — | — | $250,000 | — | $36,656 | $3,829,875 |
| 2024 | $467,115 | — | — | — | $162,500 | — | $35,602 | $2,616,961 |
| 2023 | $442,115 | — | — | — | $475,000 | — | $33,915 | $3,360,339 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.