David Hallal
First SEC filing: June 4, 2026 · Latest: June 4, 2026
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 |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 21, 2026 | SRRK | G | 36,652 | · | · | 1,602,382 Direct | -2.24% | Disposed | (price as of 2026-10-02) |
| June 3, 2026 | KLRS | A | 9,000 | · | · | 9,000 Direct | · | Acquired | (price as of 2026-10-02) |
| April 16, 2026 | SRRK | S | 30,615 | $49.57 | $1,517,586 | 1,639,034 Direct | -1.83% | Disposed | -5.6% (price as of 2026-10-02) |
| Feb. 9, 2026 | SRRK | A | 128,004 | · | · | 1,669,649 Direct | +8.30% | Acquired | (price as of 2026-10-02) |
| Jan. 13, 2026 | SRRK | S | 57,450 | $42.70 | $2,453,115 | 1,541,645 Direct | -3.59% | Disposed | 9.6% (price as of 2026-10-02) |
| Oct. 8, 2025 | SRRK | G | 205,000 | · | · | 1,599,095 Direct | -11.36% | Disposed | (price as of 2026-10-02) |
| May 2, 2025 | SRRK | A | 275,167 | · | · | 275,167 Direct | · | Acquired | (price as of 2026-10-02) |
| April 27, 2025 | SRRK | A | 1,250,000 | · | · | 1,804,095 Direct | +225.59% | Acquired | (price as of 2026-10-02) |
| April 27, 2025 | SRRK | A | 250,000 | · | · | 554,095 Direct | +82.21% | Acquired | (price as of 2026-10-02) |
| April 10, 2025 | KLRS | A | 18,000 | · | · | 18,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 27, 2024 | SRRK | A | 13,500 | · | · | 304,095 Direct | +4.65% | Acquired | (price as of 2026-10-02) |
| June 27, 2024 | SRRK | A | 18,000 | · | · | 18,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 12, 2024 | SEER | A | 58,178 | · | · | 355,128 Direct | +19.59% | Acquired | (price as of 2026-10-02) |
| June 6, 2024 | KLRS | A | 35,000 | · | · | 2,143,662 Direct | +1.66% | Acquired | (price as of 2026-10-02) |
| June 21, 2023 | SRRK | A | 36,000 | · | · | 36,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 14, 2023 | SEER | A | 34,735 | · | · | 34,735 Direct | · | Acquired | (price as of 2026-10-02) |
| June 14, 2023 | SEER | A | 23,443 | · | · | 296,950 Direct | +8.57% | Acquired | (price as of 2026-10-02) |
| May 11, 2023 | KLRS | A | 35,000 | · | · | 2,108,662 Direct | +1.69% | Acquired | (price as of 2026-10-02) |
| Oct. 19, 2022 | KLRS | S | 600,000 | $8.45 | $5,070,000 | 138,153 Indirect | -81.28% | Disposed | -98.6% (price as of 2026-10-02) |
| Sept. 29, 2022 | KLRS | S | 400,000 | $7.35 | $2,940,000 | 720,965 Indirect | -35.68% | Disposed | -98.4% (price as of 2026-10-02) |
| July 28, 2022 | KLRS | A | 3,253,796 | $4.61 | $15,000,000 | 16,674,766 Indirect | +24.24% | Acquired | -97.5% (price as of 2026-10-02) |
| July 21, 2022 | KLRS | S 10b5-1 | 4,227 | $5.33 | $22,530 | 2,073,662 Direct | -0.20% | Disposed | -97.8% (price as of 2026-10-02) |
| June 16, 2022 | SRRK | A | 14,000 | · | · | 14,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 15, 2022 | SEER | A | 29,640 | · | · | 29,640 Direct | · | Acquired | (price as of 2026-10-02) |
| June 15, 2022 | SEER | A | 9,945 | · | · | 273,507 Direct | +3.77% | Acquired | (price as of 2026-10-02) |
| June 3, 2022 | KLRS | S 10b5-1 | 65,725 | $3.67 | $241,211 | 2,077,889 Direct | -3.07% | Disposed | -96.8% (price as of 2026-10-02) |
| May 26, 2022 | SRRK | A | 28,000 | · | · | 28,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 17, 2022 | KLRS | A | 27,500 | · | · | 27,500 Direct | · | Acquired | (price as of 2026-10-02) |
| April 21, 2022 | KLRS | S 10b5-1 | 4,227 | $5.87 | $24,812 | 2,143,614 Direct | -0.20% | Disposed | -98.0% (price as of 2026-10-02) |
| March 11, 2022 | KLRS | S 10b5-1 | 25,244 | $7.37 | $186,048 | 2,147,841 Direct | -1.16% | Disposed | -98.4% (price as of 2026-10-02) |
| March 10, 2022 | KLRS | S 10b5-1 | 40,481 | $7.55 | $305,632 | 2,173,085 Direct | -1.83% | Disposed | -98.4% (price as of 2026-10-02) |
| Jan. 24, 2022 | KLRS | S | 17,100 | $8.01 | $136,971 | 2,213,566 Direct | -0.77% | Disposed | -98.5% (price as of 2026-10-02) |
| June 17, 2021 | SEER | A | 15,000 | · | · | 15,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 27, 2021 | SRRK | A | 7,800 | · | · | 7,800 Direct | · | Acquired | (price as of 2026-10-02) |
| May 25, 2021 | KLRS | A | 22,500 | · | · | 22,500 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 21, 2021 | KLRS | A | 273,000 | · | · | 273,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Jan. 21, 2021 | KLRS | A | 147,000 | · | · | 2,230,666 Direct | +7.05% | Acquired | (price as of 2026-10-02) |
| Dec. 3, 2020 | SEER | A | 18,691 | · | · | 18,691 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 3, 2020 | KLRS | C | 1,100,000 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 3, 2020 | KLRS | C | 233,333 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 3, 2020 | KLRS | C | 20,000,000 | · | · | 0 Indirect | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 3, 2020 | KLRS | C | 738,153 | · | · | 738,153 Indirect | · | Acquired | (price as of 2026-10-02) |
| Aug. 3, 2020 | KLRS | C | 156,577 | · | · | 1,120,965 Indirect | +16.24% | Acquired | (price as of 2026-10-02) |
| Aug. 3, 2020 | KLRS | C | 13,420,970 | · | · | 13,420,970 Indirect | · | Acquired | (price as of 2026-10-02) |
| July 29, 2020 | KLRS | A | 1,101,000 | · | · | 1,101,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 16, 2020 | SRRK | A | 7,000 | · | · | 7,000 Direct | · | Acquired | (price as of 2026-10-02) |
| June 16, 2020 | SRRK | A | 13,000 | · | · | 13,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 18, 2019 | SRRK | G | 2,000 | · | · | 290,595 Direct | -0.68% | Disposed | (price as of 2026-10-02) |
| May 21, 2019 | SRRK | A | 10,158 | · | · | 10,158 Direct | · | Acquired | (price as of 2026-10-02) |
| June 22, 2018 | SRRK | A | 20,316 | · | · | 20,316 Direct | · | Acquired | (price as of 2026-10-02) |
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 3, 2026 | KLRS | Stock Option (Right to Buy) | Common Stock | $4.72 | June 2, 2036 | 9,000 | Acquired |
| May 2, 2025 | SRRK | Stock Option (Right to Buy) | Common Stock | $32.91 | May 2, 2035 | 275,167 | Acquired |
| April 10, 2025 | KLRS | Stock Option (Right to Buy) | Common Stock | $7.31 | April 9, 2035 | 18,000 | Acquired |
| June 27, 2024 | SRRK | Stock Option (Right to Buy) | Common Stock | $8.36 | June 27, 2034 | 18,000 | Acquired |
| June 21, 2023 | SRRK | Stock Option (Right to Buy) | Common Stock | $9.11 | June 21, 2033 | 36,000 | Acquired |
| June 14, 2023 | SEER | Stock Option (right to buy) | Class A Common Stock | $4.33 | June 14, 2033 | 34,735 | Acquired |
| June 16, 2022 | SRRK | Stock Option (Right to Buy) | Common Stock | $4.86 | June 16, 2032 | 14,000 | Acquired |
| June 15, 2022 | SEER | Stock Option (right to buy) | Class A Common Stock | $7.33 | June 15, 2031 | 29,640 | Acquired |
| May 26, 2022 | SRRK | Stock Option (Right to Buy) | Common Stock | $4.75 | May 26, 2032 | 28,000 | Acquired |
| May 17, 2022 | KLRS | Stock Option (Right to Buy) | Common Stock | $4.60 | May 16, 2032 | 27,500 | Acquired |
| June 17, 2021 | SEER | Stock Option (right to buy) | Class A Common Stock | $33.74 | June 17, 2031 | 15,000 | Acquired |
| May 27, 2021 | SRRK | Stock Option (Right to Buy) | Common Stock | $26.78 | May 27, 2031 | 7,800 | Acquired |
| May 25, 2021 | KLRS | Stock Option (Right to Buy) | Common Stock | $21.51 | May 24, 2031 | 22,500 | Acquired |
| Jan. 21, 2021 | KLRS | Stock Option (Right to Buy) | Common Stock | $45.04 | Jan. 21, 2031 | 273,000 | Acquired |
| Dec. 3, 2020 | SEER | Stock Option (right to buy) | Class A Common Stock | $19.00 | Dec. 3, 2020 | 18,691 | Acquired |
| Aug. 3, 2020 | KLRS | Series A-4 Convertible Preferred Stock | Common Stock | · | · | 1,100,000 | Disposed |
| Aug. 3, 2020 | KLRS | Series A-4 Convertible Preferred Stock | Common Stock | · | · | 233,333 | Disposed |
| Aug. 3, 2020 | KLRS | Series A-2 Convertible Preferred Stock | Common Stock | · | · | 20,000,000 | Disposed |
| July 29, 2020 | KLRS | Stock Option (Right to Buy) | Common Stock | $17.00 | July 29, 2030 | 1,101,000 | Acquired |
| June 16, 2020 | SRRK | Stock Option (right to buy) | Common Stock | $17.65 | June 16, 2030 | 7,000 | Acquired |
| June 16, 2020 | SRRK | Stock Option (right to buy) | Common Stock | $17.65 | June 16, 2030 | 13,000 | Acquired |
| May 21, 2019 | SRRK | Stock Option (Right to Buy) | Common Stock | $21.21 | May 21, 2029 | 10,158 | Acquired |
| June 22, 2018 | SRRK | Stock Option (right to buy) | Common Stock | $21.62 | June 22, 2028 | 20,316 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 11 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Dec. 3, 2020 | SEER | Class A Common Stock | 263,562 | Direct |
| Dec. 3, 2020 | SEER | Stock Option (right to buy) | 101,886 | Direct |
| Dec. 3, 2020 | SEER | Stock Option (right to buy) | 51,753 | Direct |
| Dec. 3, 2020 | SEER | Stock Option (right to buy) | 38,422 | Direct |
| July 30, 2020 | KLRS | Common Stock | 2,083,666 | Direct |
| July 30, 2020 | KLRS | Common Stock | 964,388 | Indirect |
| July 30, 2020 | KLRS | Series A-2 Convertible Preferred Stock | 13,420,970 | Indirect |
| July 30, 2020 | KLRS | Series A-4 Convertible Preferred Stock | 156,577 | Indirect |
| July 30, 2020 | KLRS | Series A-4 Convertible Preferred Stock | 738,153 | Indirect |
| May 23, 2018 | SRRK | Common Stock | 292,595 | Direct |
| May 23, 2018 | SRRK | Stock Option (Right to Buy) | 110,924 | 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 |
|---|---|---|---|---|---|---|---|---|
| 2021 | $219,000 | · | · | · | $81,562 | · | $95,042 | $16,797,713 |
| 2020 | $566,500 | · | · | · | $410,713 | · | $3,805 | $15,258,586 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.