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Chad A. Mirkin

CIK 1416999 · last filed 2020-06-16

Chad A. Mirkin is a corporate insider who has filed 21 SEC Form 4 insider transactions across 2 companies since 2008. The most recent filing shows the insider sold $28.9K of XCUR on Jun 16, 2020. Across all open-market trades the lifetime net is −$635.2K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.2K across reported positions.

"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

21 filings
Insider 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
2020-06-16 XCUR Sell (S) −10,195 -$28.9K EDGAR
2020-06-08 XCUR Grant (A) — $0 EDGAR
2020-05-21 XCUR Exer (M) +49,649 $32.3K EDGAR
2020-03-16 XCUR Buy (P) +15,000 $21.8K EDGAR
2019-08-06 XCUR Buy (P) +25,000 $50.0K EDGAR
2019-06-14 — Grant (A) — $0
2019-03-22 — Buy (P) +500 $1.1K
2019-03-21 — Buy (P) +1,000 $2.4K
2019-03-18 — Buy (P) +1,000 $2.4K
2019-03-14 — Buy (P) +2,200 $5.5K
Showing 1–10 of 21
Page 1 of 3
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.