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Nathan Pieri

CIK 1613978 · Chief Product Officer · last filed 2019-07-03

Nathan Pieri is a Chief Product Officer who has filed 29 SEC Form 4 insider transactions across 1 company since 2014. The most recent filing, for AMBR, was dated Jul 3, 2019. Across all open-market trades the lifetime net is −$3.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $13.8K 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

$13.8K

Companies

1

Total Filings

29

Lifetime Open-Market Net

-$3.66M

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
AMBR Chief Product Officer 9,862 $1.40 $13.8K -$3.66M 29 2019-07-03

Recent Filings

29 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
2019-07-03 AMBR Disp (D) — $0 EDGAR
2019-06-13 AMBR Mixed — -$128.2K EDGAR
2019-05-23 AMBR Mixed — -$588.9K EDGAR
2019-05-16 AMBR Mixed −109,669 -$1.49M EDGAR
2019-03-08 AMBR Exer (M) +55,410 $0 EDGAR
2019-02-22 AMBR Exer (M) +17,432 $0 EDGAR
2019-02-13 AMBR Exer (M) +4,920 $0 EDGAR
2018-11-26 AMBR Sell (S) −20,000 -$179.2K EDGAR
2018-11-14 AMBR Mixed +3,481 -$12.8K EDGAR
2018-10-10 AMBR Mixed +17,600 -$73.7K EDGAR
Showing 1–10 of 29
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.