Duncan L Niederauer

CIK 1393970 · President&CEO of NYSE Euronext · last filed 2026-05-26

"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.

Loading insider history…
Disclosed Exposure

$141.61M

Companies

5

Total Filings

57

Lifetime Open-Market Net

-$2.47M

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
NATL Director 11,472 $46.06 $528.4K $0 2 2026-05-26
Anywhere Real Estate Inc. (HOUS) Delisted Director 0 $18.25 $0 $0 6 2026-01-09
Anywhere Real Estate Inc. (RLGY) Delisted Director 90,797 $12.08 $1.10M $533.2K 24 2022-05-06
ICE President&CEO of NYSE Euronext 897,245 $157.24 $141.08M -$4.29M 3 2014-03-03
NYSE Euronext (NYX) Delisted Chief Executive Officer 343,883 $1.29M 21 2013-08-01

Recent Filings · Page 4 of 6

57 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
2016-03-02 Anywhere Real Estate Inc. (RLGY) Delisted Buy (P) +6,950 $222.4K EDGAR
2016-01-29 Anywhere Real Estate Inc. (RLGY) Delisted Grant (A) +3,947 $0 EDGAR
2014-03-03 ICE Grant (A) +4,782 $0 EDGAR
2014-02-12 ICE Mixed −27,500 -$4.29M EDGAR
2013-11-14 Disp (D) −343,883 $0
2013-11-14 ICE Grant (A) +202,167 $0 EDGAR
2013-08-01 NYSE Euronext (NYX) Delisted Gift (G) −10,700 $0 EDGAR
2013-02-12 NYSE Euronext (NYX) Delisted Mixed +75,974 -$2.63M EDGAR
2013-02-08 NYSE Euronext (NYX) Delisted Grant (A) $0 EDGAR
2012-02-14 NYSE Euronext (NYX) Delisted Mixed +83,649 -$1.91M EDGAR
Showing 3140 of 57
Page 4 of 6
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.