Bruce A Westphal

CIK 1227136 · View on SEC EDGAR ↗

Insider

First SEC filing: Nov. 14, 2006 · Latest: Nov. 14, 2006

On this page

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 20 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

20 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Nov. 29, 2007 CENTA P 10,000 $4.78 $47,800 10,000 Indirect — Acquired 921.1% (price as of 2026-08-19)
Nov. 29, 2007 CENTA P 10,000 $4.78 $47,800 10,000 Indirect — Acquired 921.1% (price as of 2026-08-19)
May 24, 2007 CENTA S 5,924 $13.72 $81,277 18,168 Direct -24.59% Disposed 255.7% (price as of 2026-08-19)
May 24, 2007 CENTA S 2,962 $14.61 $43,275 10,225 Direct -22.46% Disposed 234.1% (price as of 2026-08-19)
Aug. 7, 2006 CENTA S 200 $43.11 $8,622 9,084 Direct -2.15% Disposed 13.2% (price as of 2026-08-19)
Aug. 7, 2006 CENTA S 4,347 $43.10 $187,356 9,284 Direct -31.89% Disposed 13.2% (price as of 2026-08-19)
Feb. 8, 2006 CENTA S 750 $48.30 $36,225 8,773 Direct -7.88% Disposed 1.0% (price as of 2026-08-19)
Feb. 8, 2006 CENTA S 20 $48.33 $967 9,523 Direct -0.21% Disposed 1.0% (price as of 2026-08-19)
Feb. 8, 2006 CENTA S 730 $48.43 $35,354 9,543 Direct -7.11% Disposed 0.8% (price as of 2026-08-19)
Feb. 8, 2006 CENTA S 450 $48.45 $21,802 10,273 Direct -4.20% Disposed 0.7% (price as of 2026-08-19)
Feb. 8, 2006 CENTA S 925 $48.47 $44,835 10,723 Direct -7.94% Disposed 0.7% (price as of 2026-08-19)
Feb. 8, 2006 CENTA S 200 $48.48 $9,696 11,648 Direct -1.69% Disposed 0.7% (price as of 2026-08-19)
Feb. 8, 2006 CENTA S 100 $48.50 $4,850 11,848 Direct -0.84% Disposed 0.6% (price as of 2026-08-19)
May 20, 2004 CENTA S 7,000 $37.19 $260,330 8,543 Direct -45.04% Disposed 31.2% (price as of 2026-08-19)

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
Feb. 11, 2008 CENTA Director Stock Option (right to buy) Class A Common Stock (28,341) $4.94 Aug. 11, 2011 28,341 Acquired
May 24, 2007 CENTA Director Stock Option (right to buy) Class A Common Stock (5,924) $11.23 Aug. 9, 2007 5,924 Disposed
May 24, 2007 CENTA Director Stock Option (right to buy) Common Stock (2,962) $11.30 Aug. 9, 2007 2,962 Disposed
Feb. 12, 2007 CENTA Director Stock Option (right to buy) Class A Common Stock (11,024) $12.70 Aug. 12, 2010 11,024 Acquired
Aug. 7, 2006 CENTA Director Stock Option (right to buy) Common Stock (4,547) $21.99 Aug. 10, 2006 4,547 Disposed
Feb. 13, 2006 CENTA Director Stock Option Common Stock (2,896) $48.35 Aug. 13, 2009 2,896 Acquired
Feb. 8, 2006 CENTA Director Stock Option (right to buy) Common Stock (3,175) $7.88 Feb. 12, 2006 3,175 Disposed
Feb. 7, 2005 CENTA Director Stock Option (right to buy) Common Stock (2,295) $43.58 Aug. 7, 2008 2,295 Acquired
May 20, 2004 CENTA Stock Option (right to buy) Common Stock (7,000) $7.22 Dec. 6, 2004 7,000 Disposed
Feb. 9, 2004 CENTA Director Stock Option (right to buy) Common Stock (2,962) $33.76 Aug. 9, 2007 2,962 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).