Chong Sup Park
CIK 1216771 · Director · last filed 2018-10-22
Chong Sup Park is a Director who has filed 70 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing, for STX, was dated Oct 22, 2018. Across all open-market trades the lifetime net is −$9.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $34.4M across reported positions. 9 SEC filings were submitted jointly with COMPUTER SCIENCES CORP.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
STX price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
SARATOGA, CA 95070
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| STX | Director | 49,336 | $696.89 | $34.38M | -$8.67M | 35 | 2018-10-22 |
| COMPUTER SCIENCES CORP (CSC) Delisted | Director | 12,300 | — | — | $0 | 8 | 2014-08-15 |
| ENPH | Director | — | $31.99 | — | $0 | 2 | 2013-05-06 |
| Azenta, Inc. (BRKS) Delisted | Director | 36,645 | $113.10 | $4.14M | $0 | 6 | 2012-12-21 |
| SMART Modular Technologies (WWH), Inc. (SMOD) Delisted | Director | 12,712 | — | — | -$443.3K | 19 | 2010-06-21 |
Recent Filings
70 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2018-10-22 | STX | Mixed | +5,180 | -$127.5K | EDGAR |
| 2018-02-01 | STX | Mixed | −7,026 | -$218.3K | EDGAR |
| 2017-10-19 | STX | Mixed | −3,038 | -$103.2K | EDGAR |
| 2017-05-18 | STX | Sell (S) | −3,809 | -$166.2K | EDGAR |
| 2017-02-03 | STX | Sell (S) | −1,618 | -$72.2K | EDGAR |
| 2016-11-23 | STX | Gift (G) | −1,650 | $0 | EDGAR |
| 2016-10-20 | STX | Mixed | +6,571 | -$65.9K | EDGAR |
| 2015-10-23 | STX | Mixed | +1,557 | -$58.7K | EDGAR |
| 2014-11-04 | STX | Sell (S) | −1,250 | -$78.2K | EDGAR |
| 2014-10-23 | STX | Mixed | +2,092 | -$118.3K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.