Steven Ryder
CIK 1872868 · View on SEC EDGAR ↗
First SEC filing: Sept. 12, 2024 · Latest: June 5, 2026
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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 4, 2026 | MBX | A | 12,500 | — | — | 12,500 Direct | — | Acquired | (price as of 2026-08-20) |
| June 5, 2025 | MBX | A | 16,000 | — | — | 16,000 Direct | — | Acquired | (price as of 2026-08-20) |
| Sept. 12, 2024 | MBX | A | 15,963 | — | — | 15,963 Direct | — | Acquired | (price as of 2026-08-20) |
| Feb. 6, 2023 | RLYB | A | 119,000 | — | — | 119,000 Direct | — | Acquired | (price as of 2026-08-20) |
| Feb. 7, 2022 | RLYB | A | 62,000 | — | — | 62,000 Direct | — | Acquired | (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 |
|---|---|---|---|---|---|---|---|
| June 4, 2026 | MBX | Stock option (right to buy) | Common Stock (12,500) | $30.91 | June 4, 2036 | 12,500 | Acquired |
| June 5, 2025 | MBX | Stock option (right to buy) | Common Stock (16,000) | $11.86 | June 5, 2035 | 16,000 | Acquired |
| Sept. 12, 2024 | MBX | Stock Option (Right to Buy) | Common Stock (15,963) | $16.00 | Sept. 11, 2034 | 15,963 | Acquired |
| Feb. 6, 2023 | RLYB | Option (Right to Buy) | Common Stock (119,000) | $6.50 | Feb. 6, 2033 | 119,000 | Acquired |
| Feb. 7, 2022 | RLYB | Option (Right to Buy) | Common Stock (62,000) | $15.04 | Feb. 7, 2032 | 62,000 | Acquired |
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 |
|---|---|---|---|---|
| July 29, 2026 | YARW | Stock Option (Right to Buy)→ Common Stock (228,330) | 228,330 | Direct |
| Sept. 12, 2024 | MBX | Stock Option (right to buy)→ Common Stock (39,277) | 39,277 | Direct |
| July 29, 2021 | RLYB | Common Stock | 192,370 | Direct |
| July 29, 2021 | RLYB | Option (Right to Buy)→ Common Stock (160,000) | 160,000 | 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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $531,227 | — | — | — | $191,242 | — | $13,800 | $911,061 |
| 2023 | $510,796 | — | — | — | $143,023 | — | $26,400 | $1,266,841 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.