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Jiandong Xu

CIK 1920399 · Chief Financial Officer · last filed 2026-08-25

Jiandong Xu is a Chief Financial Officer who has filed 6 SEC Form 4 insider transactions across 4 companies since 2022. The most recent filing shows the insider exercised options covering $81.5K of ESLA on Aug 25, 2026. Across all open-market trades the lifetime net is +$5.1M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $274.6K 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

$274.6K

Companies

4

Total Filings

6

Lifetime Open-Market Net

$5.10M

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
ESLA Chief Financial Officer 365,488 $0.69 $252.7K $0 1 2026-08-25
ESLAW Chief Financial Officer 282,188 $0.08 $21.9K $2.6K 2 2026-04-29
Semnur Pharmaceuticals, Inc. (DECAW) Delisted 10%+ Owner — $0.04 — $0 1 2024-09-16
Semnur Pharmaceuticals, Inc. (DECAU) Delisted 10%+ Owner 510,000 $11.84 $6.04M $5.10M 2 2022-05-24

Recent Filings

6 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
2026-08-25 ESLA Exer (M) +100,000 $81.5K EDGAR
2026-04-29 ESLAW Buy (P) +2,100 $2.6K EDGAR
2025-02-14 ESLAW Grant (A) — $0 EDGAR
2024-09-16 Semnur Pharmaceuticals, Inc. (DECAW) Delisted Sell (S) — $0 EDGAR
2022-05-24 Semnur Pharmaceuticals, Inc. (DECAU) Delisted Disp (D) — $0 EDGAR
2022-04-13 Semnur Pharmaceuticals, Inc. (DECAU) Delisted Buy (P) +510,000 $5.10M EDGAR
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.