Katherine Bolanowski
Insider
First SEC filing: May 22, 2026 · Latest: May 22, 2026
Insider at
Insider transactions
2 buys (P)
0 sells (S)
Net: $49,886
Avg return of open purchases vs now: 12.6%
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. 30, 2026 | ROCK | A | 245 | · | · | 7,525 Direct | +3.37% | Acquired | (price as of 2026-10-02) |
| June 30, 2026 | ROCK | A | 259 | · | · | 7,280 Direct | +3.69% | Acquired | (price as of 2026-10-02) |
| May 21, 2026 | ROCK | P | 144 | $35.66 | $5,135 | 17,389 Direct | +0.84% | Acquired | 12.6% (price as of 2026-10-02) |
| May 21, 2026 | ROCK | P | 1,256 | $35.63 | $44,751 | 17,245 Direct | +7.86% | Acquired | 12.7% (price as of 2026-10-02) |
| March 31, 2026 | ROCK | A | 240 | · | · | 7,021 Direct | +3.54% | Acquired | (price as of 2026-10-02) |
| March 6, 2026 | ROCK | A | 438 | · | · | 6,781 Direct | +6.91% | Acquired | (price as of 2026-10-02) |
| March 4, 2026 | ROCK | F | 2,601 | $43.05 | $111,973 | 15,989 Direct | -13.99% | Disposed | -6.7% (price as of 2026-10-02) |
| March 3, 2026 | ROCK | F | 286 | $43.83 | $12,535 | 18,590 Direct | -1.52% | Disposed | -8.4% (price as of 2026-10-02) |
| March 2, 2026 | ROCK | A | 3,410 | · | · | 18,876 Direct | +22.05% | Acquired | (price as of 2026-10-02) |
| March 1, 2026 | ROCK | F | 739 | $45.48 | $33,610 | 15,466 Direct | -4.56% | Disposed | -11.7% (price as of 2026-10-02) |
| Dec. 31, 2025 | ROCK | A | 172 | · | · | 6,343 Direct | +2.79% | Acquired | (price as of 2026-10-02) |
| Sept. 30, 2025 | ROCK | A | 183 | · | · | 6,171 Direct | +3.06% | Acquired | (price as of 2026-10-02) |
| June 30, 2025 | ROCK | A | 172 | · | · | 5,988 Direct | +2.96% | Acquired | (price as of 2026-10-02) |
| March 31, 2025 | ROCK | A | 177 | · | · | 5,816 Direct | +3.14% | Acquired | (price as of 2026-10-02) |
| March 7, 2025 | ROCK | A | 638 | · | · | 5,639 Direct | +12.76% | Acquired | (price as of 2026-10-02) |
| March 3, 2025 | ROCK | A | 2,302 | · | · | 16,205 Direct | +16.56% | Acquired | (price as of 2026-10-02) |
| March 1, 2025 | ROCK | F | 1,694 | $65.71 | $111,313 | 13,903 Direct | -10.86% | Disposed | -38.9% (price as of 2026-10-02) |
| Feb. 18, 2025 | ROCK | A | 932 | · | · | 15,597 Direct | +6.36% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2024 | ROCK | A | 136 | · | · | 5,002 Direct | +2.79% | Acquired | (price as of 2026-10-02) |
| Nov. 1, 2024 | ROCK | A | 900 | · | · | 14,665 Direct | +6.54% | Acquired | (price as of 2026-10-02) |
| Sept. 30, 2024 | ROCK | A | 155 | · | · | 4,865 Direct | +3.29% | Acquired | (price as of 2026-10-02) |
| June 30, 2024 | ROCK | A | 127 | · | · | 4,710 Direct | +2.77% | Acquired | (price as of 2026-10-02) |
| March 31, 2024 | ROCK | A | 132 | · | · | 4,583 Direct | +2.97% | Acquired | (price as of 2026-10-02) |
| March 8, 2024 | ROCK | A | 1,371 | · | · | 4,451 Direct | +44.51% | Acquired | (price as of 2026-10-02) |
| March 1, 2024 | ROCK | A | 1,811 | · | · | 13,765 Direct | +15.15% | Acquired | (price as of 2026-10-02) |
| March 1, 2024 | ROCK | F | 545 | $77.70 | $42,346 | 11,954 Direct | -4.36% | Disposed | -48.3% (price as of 2026-10-02) |
| Feb. 20, 2024 | ROCK | A | 5,788 | · | · | 12,499 Direct | +86.25% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2023 | ROCK | A | 131 | · | · | 3,080 Direct | +4.44% | Acquired | (price as of 2026-10-02) |
| Sept. 30, 2023 | ROCK | A | 152 | · | · | 2,949 Direct | +5.43% | Acquired | (price as of 2026-10-02) |
| June 30, 2023 | ROCK | A | 165 | · | · | 2,797 Direct | +6.27% | Acquired | (price as of 2026-10-02) |
| March 31, 2023 | ROCK | A | 198 | · | · | 2,632 Direct | +8.13% | Acquired | (price as of 2026-10-02) |
| March 10, 2023 | ROCK | A | 1,167 | · | · | 2,435 Direct | +92.03% | Acquired | (price as of 2026-10-02) |
| March 1, 2023 | ROCK | A | 2,170 | · | · | 6,711 Direct | +47.79% | Acquired | (price as of 2026-10-02) |
| March 1, 2023 | ROCK | F | 259 | $53.44 | $13,841 | 4,541 Direct | -5.40% | Disposed | -24.9% (price as of 2026-10-02) |
| Feb. 21, 2023 | ROCK | A | 1,905 | · | · | 4,800 Direct | +65.80% | Acquired | (price as of 2026-10-02) |
| Dec. 31, 2022 | ROCK | A | 178 | · | · | 1,268 Direct | +16.33% | Acquired | (price as of 2026-10-02) |
| Sept. 30, 2022 | ROCK | A | 234 | · | · | 1,090 Direct | +27.34% | Acquired | (price as of 2026-10-02) |
| June 30, 2022 | ROCK | A | 244 | · | · | 856 Direct | +39.87% | Acquired | (price as of 2026-10-02) |
| March 31, 2022 | ROCK | A | 158 | · | · | 612 Direct | +34.80% | Acquired | (price as of 2026-10-02) |
| March 1, 2022 | ROCK | A | 1,968 | · | · | 2,895 Direct | +212.30% | Acquired | (price as of 2026-10-02) |
| March 1, 2022 | ROCK | F | 88 | $47.00 | $4,136 | 927 Direct | -8.67% | Disposed | -14.6% (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. 30, 2026 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 245 | Acquired |
| June 30, 2026 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 259 | Acquired |
| March 31, 2026 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 240 | Acquired |
| March 6, 2026 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 438 | Acquired |
| Dec. 31, 2025 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 172 | Acquired |
| Sept. 30, 2025 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 183 | Acquired |
| June 30, 2025 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 172 | Acquired |
| March 31, 2025 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 177 | Acquired |
| March 7, 2025 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 638 | Acquired |
| Dec. 31, 2024 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 136 | Acquired |
| Sept. 30, 2024 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 155 | Acquired |
| June 30, 2024 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 127 | Acquired |
| March 31, 2024 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 132 | Acquired |
| March 8, 2024 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 1,371 | Acquired |
| Dec. 31, 2023 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 131 | Acquired |
| Sept. 30, 2023 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 152 | Acquired |
| June 30, 2023 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 165 | Acquired |
| March 31, 2023 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 198 | Acquired |
| March 10, 2023 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 1,167 | Acquired |
| Dec. 31, 2022 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 178 | Acquired |
| Sept. 30, 2022 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 234 | Acquired |
| June 30, 2022 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 244 | Acquired |
| March 31, 2022 | ROCK | Restricted Stock Unit (2018 MSPP Match) [F1] | Common Stock | · | · | 158 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).