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Stephan B. Tanda

CIK 1679516 · President and CEO · last filed 2026-08-04

Stephan B. Tanda is a President and CEO who has filed 96 SEC Form 4 insider transactions across 3 companies since 2017. The most recent filing, for ATR, was dated Aug 4, 2026. Across all open-market trades the lifetime net is −$20.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $33.9M 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

$33.91M

Companies

3

Total Filings

96

Lifetime Open-Market Net

-$20.00M

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
ATR President and CEO 241,879 $134.75 $32.59M -$20.08M 52 2026-08-04
INGR Director 12,534 $104.67 $1.31M $79.8K 35 2026-05-22
Patheon N.V. (PTHN) Delisted Director 0 — — $0 2 2017-08-30

Recent Filings

96 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
2026-08-04 ATR Mixed — -$603.8K EDGAR
2026-08-03 ATR Notice (144) −9,838 -$1.34M EDGAR
2026-05-22 INGR Grant (A) +1,797 $192.9K EDGAR
2026-05-04 ATR Mixed +23,947 -$1.85M EDGAR
2026-04-16 INGR Gift (G) — $0 EDGAR
2026-04-13 INGR Gift (G) — $0 EDGAR
2026-04-02 INGR Grant (A) +380 $42.8K EDGAR
2026-03-19 ATR Grant (A) +13,796 $0 EDGAR
2026-03-18 ATR Tax (F) −1,772 -$229.5K EDGAR
2026-03-17 ATR Tax (F) −3,455 -$444.5K EDGAR
Showing 1–10 of 96
Page 1 of 10
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.