Shengman Zhang
CIK 1369229 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 15, 2008 · Latest: Jan. 15, 2008
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 5 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 |
|---|---|---|---|---|---|---|---|---|---|
| Jan. 8, 2010 | CBT | A | 625 | — | — | 9,375 Direct | +7.14% | Acquired | (price as of 2026-08-21) |
| Jan. 9, 2009 | CBT | A | 2,500 | — | — | 8,750 Direct | +40.00% | Acquired | (price as of 2026-08-21) |
| Jan. 11, 2008 | CBT | A | 2,500 | — | — | 6,250 Direct | +66.67% | Acquired | (price as of 2026-08-21) |
| Jan. 12, 2007 | CBT | A | 2,500 | — | — | 3,750 Direct | +200.00% | Acquired | (price as of 2026-08-21) |
| Sept. 29, 2006 | CBT | A | 1,250 | — | — | 1,250 Direct | — | Acquired | (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.
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| July 20, 2006 | CBT | Common Stock | 0 | Direct |