Rebecca B Robertson
CIK 1201585 · View on SEC EDGAR ↗
Insider
First SEC filing: June 4, 2026 · Latest: June 4, 2026
On this page
Insider at
Insider transactions
0 buys (P)
5 sells (S)
Net:
$-192,627
+ 13 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
13 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 3, 2026 | CBLL | S 10b5-1 | 827 | $17.80 | $14,721 | 18,749 Direct | -4.22% | Disposed | 34.5% (price as of 2026-08-21) |
| Jan. 2, 2026 | CBLL | S 10b5-1 | 2,500 | $21.89 | $54,725 | 19,576 Direct | -11.32% | Disposed | 9.4% (price as of 2026-08-21) |
| Dec. 8, 2025 | CBLL | S 10b5-1 | 5,000 | $20.00 | $100,000 | 8,388 Direct | -37.35% | Disposed | 19.7% (price as of 2026-08-21) |
| Dec. 2, 2025 | CBLL | S 10b5-1 | 827 | $16.67 | $13,786 | 8,388 Direct | -8.97% | Disposed | 43.6% (price as of 2026-08-21) |
| Sept. 3, 2025 | CBLL | S 10b5-1 | 827 | $11.36 | $9,395 | 9,215 Direct | -8.24% | Disposed | 110.8% (price as of 2026-08-21) |
| June 18, 2025 | CBLL | S 10b5-1 | 11,188 | $17.85 | $199,706 | 10,042 Direct | -52.70% | Disposed | 34.1% (price as of 2026-08-21) |
| June 17, 2025 | CBLL | S 10b5-1 | 7,445 | $17.63 | $131,255 | 21,230 Direct | -25.96% | Disposed | 35.8% (price as of 2026-08-21) |
| June 17, 2025 | CBLL | S 10b5-1 | 7,445 | $17.63 | $131,255 | 21,230 Direct | -25.96% | Disposed | 35.8% (price as of 2026-08-21) |
| June 16, 2025 | CBLL | S 10b5-1 | 20,000 | $17.14 | $342,800 | 28,675 Direct | -41.09% | Disposed | 39.7% (price as of 2026-08-21) |
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 |
|---|---|---|---|---|---|---|---|
| Jan. 2, 2026 | CBLL | Stock Option (Right to Buy) | Common Stock (2,500) | $2.24 | March 21, 2029 | 2,500 | Disposed |
| Dec. 8, 2025 | CBLL | Stock Option (Right to Buy) | Common Stock (5,000) | $2.24 | March 21, 2029 | 5,000 | Disposed |
| June 16, 2025 | CBLL | Stock Option (Right to Buy) | Common Stock (19,455) | $3.65 | June 10, 2031 | 19,455 | Disposed |
| June 16, 2025 | CBLL | Stock Option (Right to Buy) | Common Stock (545) | $2.24 | March 21, 2029 | 545 | Disposed |
| June 18, 2019 | TNDM | Stock Option [F1] | Common Stock (1,555) | $64.66 | — | 1,555 | Acquired |
| Jan. 2, 2019 | TNDM | Stock Option [F1] | Common Stock (50,000) | $34.00 | — | 50,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 6 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Oct. 10, 2024 | CBLL | Common Stock | — | Direct |
| Oct. 10, 2024 | CBLL | Stock Option (Right to Buy)→ Common Stock (48,799) | 48,799 | Direct |
| Oct. 10, 2024 | CBLL | Stock Option (Right to Buy)→ Common Stock (15,695) | 15,695 | Direct |
| Oct. 10, 2024 | CBLL | Stock Option (Right to Buy)→ Common Stock (19,455) | 19,455 | Direct |
| Jan. 9, 2019 | TNDM | Common Stock | 0 | Direct |
| Jan. 8, 2019 | TNDM | Common Stock | 0 | Direct |