William Hartzel
CIK 1989644 · View on SEC EDGAR ↗
Insider
First SEC filing: Aug. 15, 2023 · Latest: June 10, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 15 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| June 8, 2026 | EBS | F | 1,741 | $8.00 | $13,928 | 185,558 | — | — | -40.4% (price as of 2026-08-20) |
| July 11, 2025 | EBS | F | 4,263 | $7.36 | $31,376 | 103,692 Direct | -3.95% | Disposed | -35.2% (price as of 2026-08-20) |
| June 8, 2025 | EBS | F | 1,167 | $6.63 | $7,737 | 107,955 Direct | -1.07% | Disposed | -28.1% (price as of 2026-08-20) |
| April 7, 2025 | EBS | F | 561 | $4.44 | $2,491 | 109,122 Direct | -0.51% | Disposed | 7.4% (price as of 2026-08-20) |
| March 6, 2025 | EBS | A | 62,500 | — | — | 109,683 Direct | +132.46% | Acquired | (price as of 2026-08-20) |
| March 6, 2025 | EBS | A | 62,500 | — | — | 109,975 Direct | +131.65% | Acquired | (price as of 2026-08-20) |
| March 6, 2025 | EBS | A | 62,500 | — | — | 214,711 Direct | +41.06% | Acquired | (price as of 2026-08-20) |
| March 5, 2025 | EBS | F | 292 | $5.80 | $1,694 | 47,183 Direct | -0.62% | Disposed | -17.8% (price as of 2026-08-20) |
| Nov. 11, 2024 | EBS | F | 632 | $11.97 | $7,565 | 47,475 Direct | -1.31% | Disposed | -60.2% (price as of 2026-08-20) |
| July 11, 2024 | EBS | A | 15,000 | — | — | 48,107 Direct | +45.31% | Acquired | (price as of 2026-08-20) |
| June 8, 2024 | EBS | F | 1,167 | $6.19 | $7,224 | 33,107 Direct | -3.40% | Disposed | -22.9% (price as of 2026-08-20) |
| April 7, 2024 | EBS | F | 665 | $2.29 | $1,523 | 34,274 Direct | -1.90% | Disposed | 108.3% (price as of 2026-08-20) |
| March 13, 2024 | EBS | A | 125,000 | — | — | 152,211 Direct | +459.37% | Acquired | (price as of 2026-08-20) |
| March 5, 2024 | EBS | F | 346 | $3.41 | $1,180 | 34,939 Direct | -0.98% | Disposed | 39.9% (price as of 2026-08-20) |
| Nov. 11, 2023 | EBS | F | 632 | $2.00 | $1,264 | 35,285 Direct | -1.76% | Disposed | 138.5% (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 |
|---|---|---|---|---|---|---|---|
| March 6, 2025 | EBS | Employee Stock Options (Right to Buy) | Common Stock (62,500) | $5.80 | March 5, 2032 | 62,500 | Acquired |
| March 13, 2024 | EBS | Employee Stock Options (Right to Buy) | Common Stock (125,000) | $2.33 | March 12, 2031 | 125,000 | 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 |
|---|---|---|---|---|
| Aug. 15, 2023 | EBS | Common Stock | 35,917 | Direct |
| Aug. 15, 2023 | EBS | Employee Stock Options (Right to Buy)→ Common Stock (11,826) | 11,826 | Direct |
| Aug. 15, 2023 | EBS | Employee Stock Options (Right to Buy)→ Common Stock (3,077) | 3,077 | Direct |
| Aug. 15, 2023 | EBS | Employee Stock Options (Right to Buy)→ Common Stock (12,308) | 12,308 | Direct |