Kirk E. Kleiser
Insider
First SEC filing: Oct. 7, 2021 · Latest: June 11, 2026
Insider at
Insider transactions
5 buys (P)
5 sells (S)
Net: $3,678
Avg return of open purchases vs now: 9.3%
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. 16, 2026 | CLST | M | 529 | $12.08 | $6,390 | 45,887 Direct | +1.17% | Acquired | 34.9% (price as of 2026-10-02) |
| Sept. 16, 2026 | CLST | M | 16,928 | $13.30 | $225,142 | 45,358 Direct | +59.54% | Acquired | 22.6% (price as of 2026-10-02) |
| Sept. 16, 2026 | CLST | M | 16,928 | · | · | 4,232 Direct | -80.00% | Disposed | (price as of 2026-10-02) |
| Sept. 16, 2026 | CLST | M | 529 | · | · | 2,116 Direct | -20.00% | Disposed | (price as of 2026-10-02) |
| June 10, 2026 | CLST | S | 5,000 | $16.04 | $80,200 | 0 Indirect | -100.00% | Disposed | 1.6% (price as of 2026-10-02) |
| June 10, 2026 | CLST | S | 1,000 | $16.04 | $16,040 | 0 Indirect | -100.00% | Disposed | 1.6% (price as of 2026-10-02) |
| June 10, 2026 | CLST | A | 1,058 | · | · | 25,580 Direct | +4.31% | Acquired | (price as of 2026-10-02) |
| June 10, 2026 | CLST | P | 2,850 | $16.13 | $45,970 | 28,430 Direct | +11.14% | Acquired | 1.1% (price as of 2026-10-02) |
| June 10, 2026 | CLST | P | 2,350 | $16.09 | $37,812 | 20,099 Indirect | +13.24% | Acquired | 1.3% (price as of 2026-10-02) |
| June 10, 2026 | CLST | P | 1,000 | $16.11 | $16,110 | 4,100 Indirect | +32.26% | Acquired | 1.2% (price as of 2026-10-02) |
| Oct. 28, 2025 | CLST | S | 1,500 | $13.43 | $20,145 | 3,250 Indirect | -31.58% | Disposed | 21.4% (price as of 2026-10-02) |
| Oct. 28, 2025 | CLST | S | 2,500 | $13.39 | $33,475 | 750 Indirect | -76.92% | Disposed | 21.7% (price as of 2026-10-02) |
| Oct. 28, 2025 | CLST | S | 750 | $13.40 | $10,050 | 0 Indirect | -100.00% | Disposed | 21.6% (price as of 2026-10-02) |
| Oct. 28, 2025 | CLST | P | 100 | $13.40 | $1,340 | 13,099 Indirect | +0.77% | Acquired | 21.6% (price as of 2026-10-02) |
| Oct. 28, 2025 | CLST | P | 4,650 | $13.41 | $62,356 | 17,749 Indirect | +35.50% | Acquired | 21.6% (price as of 2026-10-02) |
| June 11, 2025 | CLST | P | 200 | $12.25 | $2,450 | 12,999 Indirect | +1.56% | Acquired | 33.1% (price as of 2026-10-02) |
| June 11, 2025 | CLST | P | 350 | $12.29 | $4,302 | 4,750 Indirect | +7.95% | Acquired | 32.6% (price as of 2026-10-02) |
| June 11, 2025 | CLST | P | 300 | $12.24 | $3,672 | 3,100 Indirect | +10.71% | Acquired | 33.2% (price as of 2026-10-02) |
| June 11, 2025 | CLST | P | 900 | $12.30 | $11,070 | 900 Indirect | · | Acquired | 32.5% (price as of 2026-10-02) |
| June 10, 2025 | CLST | A | 1,058 | · | · | 24,522 Direct | +4.51% | Acquired | (price as of 2026-10-02) |
| June 10, 2025 | CLST | A | 2,645 | · | · | 2,645 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 22, 2024 | CLST | P | 1,900 | $11.64 | $22,116 | 4,400 Indirect | +76.00% | Acquired | 40.0% (price as of 2026-10-02) |
| Nov. 1, 2023 | CLST | P | 1,699 | $11.21 | $19,046 | 12,799 Indirect | +15.31% | Acquired | 45.4% (price as of 2026-10-02) |
| May 8, 2023 | CLST | P | 3,600 | $9.63 | $34,668 | 11,100 Indirect | +48.00% | Acquired | 69.3% (price as of 2026-10-02) |
| May 8, 2023 | CLST | P | 1,600 | $9.64 | $15,424 | 2,800 Indirect | +133.33% | Acquired | 69.1% (price as of 2026-10-02) |
| May 1, 2023 | CLST | P | 5,500 | $10.95 | $60,225 | 7,500 Indirect | +275.00% | Acquired | 48.9% (price as of 2026-10-02) |
| May 1, 2023 | CLST | P | 5,500 | $10.95 | $60,225 | 30,964 Direct | +21.60% | Acquired | 48.9% (price as of 2026-10-02) |
| Sept. 1, 2022 | CLST | A | 8,464 | · | · | 23,464 Direct | +56.43% | Acquired | (price as of 2026-10-02) |
| Sept. 1, 2022 | CLST | A | 21,160 | · | · | 21,160 Direct | · | Acquired | (price as of 2026-10-02) |
| Sept. 1, 2022 | CLST | A | 8,464 | · | · | 25,464 Direct | +49.79% | Acquired | (price as of 2026-10-02) |
| Sept. 1, 2022 | CLST | A | 21,160 | · | · | 21,160 Direct | · | Acquired | (price as of 2026-10-02) |
| Aug. 16, 2022 | CLST | P | 1,000 | $13.30 | $13,300 | 2,000 Indirect | +100.00% | Acquired | 22.6% (price as of 2026-10-02) |
| Aug. 16, 2022 | CLST | P | 1,000 | $13.30 | $13,300 | 17,000 Direct | +6.25% | Acquired | 22.6% (price as of 2026-10-02) |
| Aug. 15, 2022 | CLST | P | 100 | $13.21 | $1,321 | 100 Indirect | · | Acquired | 23.4% (price as of 2026-10-02) |
| Aug. 15, 2022 | CLST | P | 900 | $13.21 | $11,889 | 1,000 Indirect | +900.00% | Acquired | 23.4% (price as of 2026-10-02) |
| Aug. 15, 2022 | CLST | P | 1,200 | $13.20 | $15,840 | 1,200 Indirect | · | Acquired | 23.5% (price as of 2026-10-02) |
| Aug. 15, 2022 | CLST | P | 100 | $13.21 | $1,321 | 15,100 Direct | +0.67% | Acquired | 23.4% (price as of 2026-10-02) |
| Aug. 15, 2022 | CLST | P | 900 | $13.21 | $11,889 | 16,000 Direct | +5.96% | Acquired | 23.4% (price as of 2026-10-02) |
| Aug. 15, 2022 | CLST | P | 1,200 | $13.20 | $15,840 | 1,200 Indirect | · | Acquired | 23.5% (price as of 2026-10-02) |
| Oct. 12, 2021 | CLST | P | 15,000 | $10.00 | $150,000 | 15,000 Direct | · | Acquired | 63.0% (price as of 2026-10-02) |
| Oct. 12, 2021 | CLST | P | 5,000 | $10.00 | $50,000 | 5,000 Indirect | · | Acquired | 63.0% (price as of 2026-10-02) |
| Oct. 12, 2021 | CLST | P | 1,000 | $10.00 | $10,000 | 1,000 Indirect | · | Acquired | 63.0% (price as of 2026-10-02) |
| Oct. 12, 2021 | CLST | P | 2,500 | $10.00 | $25,000 | 2,500 Indirect | · | Acquired | 63.0% (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 |
|---|---|---|---|---|---|---|---|
| Sept. 16, 2026 | CLST | Stock Option (Right to Buy) | Common Stock | $13.30 | Sept. 1, 2032 | 16,928 | Disposed |
| Sept. 16, 2026 | CLST | Stock Option (Right to Buy) | Common Stock | $12.08 | June 10, 2035 | 529 | Disposed |
| June 10, 2025 | CLST | Stock Option (Right to Buy) | Common Stock | $12.08 | June 10, 2035 | 2,645 | Acquired |
| Sept. 1, 2022 | CLST | Stock Option (Right to Buy) | Common Stock | $13.30 | Sept. 1, 2032 | 21,160 | Acquired |
| Sept. 1, 2022 | CLST | Stock Option (Right to Buy) | Common Stock | $13.30 | Sept. 1, 2032 | 21,160 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Oct. 7, 2021 | CLST | No securities owned | 0 | Direct |