Chad A. Mirkin
CIK 1416999 · last filed 2020-06-16
"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.
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Disclosed Exposure
$1.2K
Companies
2
Total Filings
21
Lifetime Open-Market Net
-$635.2K
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| XCUR | Director | 657 | $1.76 | $1.2K | $42.9K | 5 | 2020-06-16 |
| NANOSPHERE INC (NSPH) Delisted | Director | 14,138 | — | — | -$678.1K | 9 | 2013-02-22 |
Recent Filings · Page 2 of 3
21 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2018-06-21 | — | Grant (A) | — | $0 | |
| 2017-09-28 | — | Mixed | +11,297,060 | $0 | |
| 2013-02-22 | NANOSPHERE INC (NSPH) Delisted | Buy (P) | +10,000 | $19.6K | EDGAR |
| 2012-10-10 | NANOSPHERE INC (NSPH) Delisted | Grant (A) | — | $0 | EDGAR |
| 2011-10-04 | NANOSPHERE INC (NSPH) Delisted | Buy (P) | +3,370 | $3.3K | EDGAR |
| 2011-06-03 | NANOSPHERE INC (NSPH) Delisted | Grant (A) | — | $0 | EDGAR |
| 2011-05-11 | NANOSPHERE INC (NSPH) Delisted | Buy (P) | +10,000 | $22.0K | EDGAR |
| 2008-12-31 | NANOSPHERE INC (NSPH) Delisted | Gift (G) | — | $0 | EDGAR |
| 2008-09-03 | NANOSPHERE INC (NSPH) Delisted | Sell (S) | −80,000 | -$723.0K | EDGAR |
| 2008-05-20 | NANOSPHERE INC (NSPH) Delisted | Gift (G) | — | $0 | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.
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.