Mark Howard Snyder
CIK 1902866 · View on SEC EDGAR ↗
Insider
First SEC filing: June 15, 2026 · Latest: June 15, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 25 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 12, 2026 | HALO | M | 5,034 | — | — | 10,068 Direct | -33.33% | Disposed | (price as of 2026-08-20) |
| June 12, 2026 | HALO | F | 2,715 | $69.50 | $188,692 | 49,929 Direct | -5.16% | Disposed | 52.9% (price as of 2026-08-20) |
| June 12, 2026 | HALO | M | 5,034 | — | — | 52,644 Direct | +10.57% | Acquired | (price as of 2026-08-20) |
| Feb. 23, 2026 | HALO | M | 7,011 | — | — | 14,022 Direct | -33.33% | Disposed | (price as of 2026-08-20) |
| Feb. 23, 2026 | HALO | F | 3,782 | $70.64 | $267,160 | 47,610 Direct | -7.36% | Disposed | 50.5% (price as of 2026-08-20) |
| Feb. 23, 2026 | HALO | M | 7,011 | — | — | 51,392 Direct | +15.80% | Acquired | (price as of 2026-08-20) |
| Feb. 20, 2026 | HALO | M | 5,332 | — | — | 15,995 Direct | -25.00% | Disposed | (price as of 2026-08-20) |
| Feb. 20, 2026 | HALO | F | 2,876 | $70.98 | $204,138 | 44,381 Direct | -6.09% | Disposed | 49.8% (price as of 2026-08-20) |
| Feb. 20, 2026 | HALO | M | 5,332 | — | — | 47,257 Direct | +12.72% | Acquired | (price as of 2026-08-20) |
| Feb. 16, 2026 | HALO | M | 12,016 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Feb. 16, 2026 | HALO | M | 4,796 | — | — | 4,796 Direct | -50.00% | Disposed | (price as of 2026-08-20) |
| Feb. 16, 2026 | HALO | F | 6,481 | $79.44 | $514,851 | 41,925 Direct | -13.39% | Disposed | 33.8% (price as of 2026-08-20) |
| Feb. 16, 2026 | HALO | M | 12,016 | — | — | 48,406 Direct | +33.02% | Acquired | (price as of 2026-08-20) |
| Feb. 16, 2026 | HALO | F | 2,587 | $79.44 | $205,511 | 36,390 Direct | -6.64% | Disposed | 33.8% (price as of 2026-08-20) |
| Feb. 16, 2026 | HALO | M | 4,796 | — | — | 38,977 Direct | +14.03% | Acquired | (price as of 2026-08-20) |
| Feb. 9, 2026 | HALO | A | 29,502 | — | — | 29,502 Direct | — | Acquired | (price as of 2026-08-20) |
| Feb. 9, 2026 | HALO | A | 7,808 | — | — | 45,127 Direct | +20.92% | Acquired | (price as of 2026-08-20) |
| Feb. 9, 2026 | HALO | A | 4,651 | — | — | 12,016 Direct | +63.15% | Acquired | (price as of 2026-08-20) |
| Feb. 9, 2026 | HALO | A | 17,396 | — | — | 17,396 Direct | — | Acquired | (price as of 2026-08-20) |
| Feb. 9, 2026 | HALO | A | 18,730 | — | — | 18,730 Direct | — | Acquired | (price as of 2026-08-20) |
| Jan. 3, 2026 | HALO | M | 7,611 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Jan. 3, 2026 | HALO | F | 4,243 | $70.31 | $298,325 | 34,181 Direct | -11.04% | Disposed | 51.2% (price as of 2026-08-20) |
| Jan. 3, 2026 | HALO | M | 7,611 | — | — | 38,424 Direct | +24.70% | Acquired | (price as of 2026-08-20) |
| Jan. 3, 2022 | HALO | A | 30,444 | — | — | 30,444 Direct | — | Acquired | (price as of 2026-08-20) |
| Jan. 3, 2022 | HALO | A | 83,142 | — | — | 83,142 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 12, 2026 | HALO | Restricted Stock Units | Common Stock (5,034) | $0.00 | — | 5,034 | Disposed |
| Feb. 23, 2026 | HALO | Restricted Stock Units | Common Stock (7,011) | $0.00 | — | 7,011 | Disposed |
| Feb. 20, 2026 | HALO | Restricted Stock Units | Common Stock (5,332) | $0.00 | — | 5,332 | Disposed |
| Feb. 16, 2026 | HALO | Performance Stock Units | Common Stock (12,016) | $0.00 | — | 12,016 | Disposed |
| Feb. 16, 2026 | HALO | Restricted Stock Units | Common Stock (4,796) | $0.00 | — | 4,796 | Disposed |
| Feb. 9, 2026 | HALO | Performance Stock Units | Common Stock (29,502) | $0.00 | — | 29,502 | Acquired |
| Feb. 9, 2026 | HALO | Performance Stock Units | Common Stock (7,808) | $0.00 | — | 7,808 | Acquired |
| Feb. 9, 2026 | HALO | Performance Stock Units | Common Stock (4,651) | $0.00 | — | 4,651 | Acquired |
| Feb. 9, 2026 | HALO | Restricted Stock Units | Common Stock (17,396) | $0.00 | — | 17,396 | Acquired |
| Feb. 9, 2026 | HALO | Option to Purchase Common Stock | Common Stock (18,730) | $80.48 | Feb. 9, 2036 | 18,730 | Acquired |
| Jan. 3, 2026 | HALO | Restricted Stock Units | Common Stock (7,611) | $0.00 | — | 7,611 | Disposed |
| Jan. 3, 2022 | HALO | Restricted Stock Unit | Common Stock (30,444) | $0.00 | Jan. 3, 2032 | 30,444 | Acquired |
| Jan. 3, 2022 | HALO | Option to Purchase Common Stock | Common Stock (83,142) | $41.06 | Jan. 3, 2032 | 83,142 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
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 | $619,000 | — | $2,975,129 | $525,004 | $394,613 | — | $17,822 | $4,531,568 |
| 2024 | $579,000 | — | $3,762,579 | $487,517 | $548,197 | — | $17,572 | $5,394,865 |
| 2023 | $546,000 | — | $1,620,053 | $1,080,003 | $349,549 | — | $17,322 | $3,612,927 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.