John W. Chamberlain
CIK 1508168 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 11, 2011 · Latest: Jan. 11, 2011
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 7 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
7 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 17, 2013 | AAT | S | 5,000 | $34.96 | $174,800 | 62,266 Indirect | -7.43% | Disposed | -34.7% (price as of 2026-08-20) |
| Dec. 13, 2011 | AAT | P | 1,000 | $20.15 | $20,150 | 289,448 Indirect | +0.35% | Acquired | 13.3% (price as of 2026-08-20) |
| Aug. 19, 2011 | AAT | P | 2,500 | $18.27 | $45,675 | 227,500 Direct | +1.11% | Acquired | 25.0% (price as of 2026-08-20) |
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 |
|---|---|---|---|---|---|---|---|
| May 10, 2013 | AAT | Operating Partnership Units [F3] | Common Stock par value $0.01 (2,818) | — | — | 2,818 | Disposed |
| Jan. 19, 2011 | AAT | Operating Partnership Units [F4] | Common Stock, par value $0.01 (13,512) | — | — | 13,512 | 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 |
|---|---|---|---|---|
| Jan. 11, 2011 | AAT | No securities are beneficially owned | 0 | Direct |