CHAMBERS JOHN T

Director, Executive Chairman, Chairman and CEO · SEC CIK 1198044
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Buy track record

How this insider's open-market purchases have performed
This insider has no open-market purchases in the records we parsed, so there's no buy track record to score. Their full filing history is below.
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Open-market buys
$0
0 trades
Open-market sells
$253.06M
21 trades
Net flow
−$253.06M
Net selling
Total filings
56
transactions shown

Full transaction history

All Form 4 activity across every company, newest first
View on SEC EDGAR ↗
BE
Sell CHAMBERS JOHN T · Director · Open-market sale · filed 1w ago ΔOwn −19%

Chambers John T sold $16.37M of BE, trimming their stake 19%.

−$16.37M
55,000 sh @ $298
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BE
Sell CHAMBERS JOHN T · Director · Open-market sale · filed Nov 12, 2021 ΔOwn −10%

Chambers John T sold $1.15M of BE, trimming their stake 10%.

−$1.15M
33,721 sh @ $34
BE
Sell CHAMBERS JOHN T · Director · Open-market sale · filed Nov 12, 2021 ΔOwn −2.1%

Chambers John T sold $219.6K of BE, trimming their stake 2%.

−$219.6K
6,279 sh @ $35
CSCO
Sell CHAMBERS JOHN T · Director, Executive Chairman · Open-market sale · filed Nov 27, 2017 ΔOwn −26%

Chambers John T sold $9.12M of CSCO, trimming their stake 26%.

−$9.12M
250,000 sh @ $36
CSCO
Tax withholding CHAMBERS JOHN T · Director, Executive Chairman · Tax withholding · filed Nov 22, 2017 ΔOwn −0.4%
−$144.2K
4,018 sh @ $36
CSCO
Tax withholding CHAMBERS JOHN T · Director, Executive Chairman · Tax withholding · filed Sep 13, 2017 ΔOwn −22%
−$8.44M
267,954 sh @ $31
CSCO
Sell CHAMBERS JOHN T · Director, Executive Chairman · Open-market sale · filed Aug 25, 2017 ΔOwn −26%

Chambers John T sold $7.79M of CSCO, trimming their stake 26%.

−$7.79M
250,000 sh @ $31
CSCO
Sell CHAMBERS JOHN T · Director, Executive Chairman · Open-market sale · filed May 26, 2017 ΔOwn −20%

Chambers John T sold $7.87M of CSCO, trimming their stake 20%.

−$7.87M
250,000 sh @ $31
CSCO
Sell CHAMBERS JOHN T · Director, Executive Chairman · Open-market sale · filed May 26, 2017 ΔOwn −100%

Chambers John T sold $724.1K of CSCO, trimming their stake 100%.

−$724.1K
22,769 sh @ $32
CSCO
Sell CHAMBERS JOHN T · Director, Executive Chairman · Open-market sale · filed May 26, 2017 ΔOwn −100%

Chambers John T sold $724.1K of CSCO, trimming their stake 100%.

−$724.1K
22,768 sh @ $32
CSCO
Sell CHAMBERS JOHN T · Director, Executive Chairman · Open-market sale · filed Feb 24, 2017 ΔOwn −17%

Chambers John T sold $8.51M of CSCO, trimming their stake 17%.

−$8.51M
250,000 sh @ $34
CSCO
Sell CHAMBERS JOHN T · Director, Executive Chairman · Open-market sale · filed Feb 24, 2017 ΔOwn −50%

Chambers John T sold $775.1K of CSCO, trimming their stake 50%.

−$775.1K
22,769 sh @ $34
CSCO
Sell CHAMBERS JOHN T · Director, Executive Chairman · Open-market sale · filed Feb 24, 2017 ΔOwn −50%

Chambers John T sold $775.3K of CSCO, trimming their stake 50%.

−$775.3K
22,769 sh @ $34
CSCO
Sell CHAMBERS JOHN T · Director, Executive Chairman · Open-market sale · filed Nov 28, 2016 ΔOwn −15%

Chambers John T sold $7.43M of CSCO, trimming their stake 15%.

−$7.43M
250,000 sh @ $30

Frequently asked questions

How is CHAMBERS JOHN T's win rate calculated?

We take every open-market purchase (SEC code P) we can match to a stock price, then compare the split- and dividend-adjusted price on the purchase date to the most recent close. The win rate is the share of those buys currently trading above the purchase price. Sales and share grants are not scored.

Why are some buys not included in the score?

A purchase is excluded if we can't price it — for example if the ticker is missing from the filing, the company has been delisted, or the security isn't a common stock we can match to market data. Excluded counts are shown next to the scored total.

What do the 1M / 3M / 6M / 12M columns mean?

They show each purchase's return after a fixed holding period — one, three, six, and twelve months from the buy date — using split- and dividend-adjusted prices. This separates good entry timing from simply holding a long-running winner. A dash means that horizon hasn't elapsed yet for that trade, or the stock couldn't be priced at that date.

Does a high win rate mean I should copy this insider?

No. Past performance does not predict future results, sample sizes are often small, and an insider's edge in their own company doesn't transfer to yours. This is context, not a recommendation. InsiderSource is not investment advice.

Where does this data come from?

Trades come from CHAMBERS JOHN T's SEC Form 4 filings on EDGAR. Prices come from public market data and are split/dividend-adjusted. Always verify against the original filings before acting.