Home

Jian Guo

CIK 1907145 · Chief Financial Officer · last filed 2026-08-14

Jian Guo is a Chief Financial Officer who has filed 18 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing shows the insider exercised options covering $77.7K of KRT on Aug 14, 2026. Across all open-market trades the lifetime net is +$42.0K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $2.0M 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.

Loading insider history…
Disclosed Exposure

$2.00M

Companies

1

Total Filings

18

Lifetime Open-Market Net

$42.0K

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
KRT Chief Financial Officer 41,529 $48.17 $2.00M $42.0K 18 2026-08-14

Recent Filings

18 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
2026-08-14 KRT Exer (M) +4,700 $77.7K EDGAR
2026-05-15 KRT Tax (F) −2,733 -$71.8K EDGAR
2026-05-14 KRT Mixed +8,000 $0 EDGAR
2025-11-14 KRT Buy (P) +1,361 $30.1K EDGAR
2025-08-18 KRT Exer (M) +2,450 $40.5K EDGAR
2025-05-15 KRT Mixed +5,221 -$83.5K EDGAR
2024-11-20 KRT Exer (M) +2,500 $41.3K EDGAR
2024-08-20 KRT Exer (M) +2,000 $33.1K EDGAR
2024-05-15 KRT Tax (F) −2,481 -$68.1K EDGAR
2024-05-13 KRT Exer (M) +11,500 $57.9K EDGAR
Showing 1–10 of 18
Page 1 of 2
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.