Insider · CIK 0001798800
James Paul Kastenmayer
Files at AVBP (ArriVent BioPharma, Inc.). First filing -, latest -.
James Paul Kastenmayer files SEC Form 4 as officer at AVBP (ArriVent BioPharma, Inc.). No open-market trade is on file; the transactions below are grants, exercises and other rows that carry no view on the price.
A track record needs three past buys with six months of prices behind them; James Paul Kastenmayer has 0, so none is measured yet.
Signals
This insider’s open-market buys and sells, scored.
Transactions
Every row this insider has filed, 2 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Feb 2, 2026 | AVBP ArriVent BioPharma, Inc. | AGrant or award Stock Option (right to buy)derivative | +130,000 | $0.00 | $0 | 130,000 | Feb 4, 2026 |
| Feb 3, 2025 | AVBP ArriVent BioPharma, Inc. | AGrant or award Stock Option (right to buy)derivative | +102,000 | $0.00 | $0 | 102,000 | Feb 14, 2025 |
Questions about James Paul Kastenmayer
Answered from the filings on this page, as of the latest one.
Is James Paul Kastenmayer buying or selling?
James Paul Kastenmayer has no open-market buy or sell on SEC Form 4; the filings on record are grants, exercises and other transactions.
How did James Paul Kastenmayer's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and James Paul Kastenmayer has 0.
Where does James Paul Kastenmayer file Form 4?
James Paul Kastenmayer has filed Form 4 at AVBP (ArriVent BioPharma, Inc.) as General Counsel. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.