Amprius Technologies (AMPX) director executes 67,796-share sell-to-cover trade
Rhea-AI Filing Summary
Amprius Technologies director Sun Kang reported an open-market sale of 67,796 shares of common stock on May 21, 2026 at an average price of $14.7884 per share. According to the disclosure, this sale was executed under non-discretionary, sell-to-cover arrangements mandated by the company to fund tax withholding obligations tied to the vesting of restricted stock units.
Following the sale, Kang directly held 1,280,854 common shares, which the filing notes include 1,039,443 restricted stock units, each representing a contingent right to one share subject to vesting conditions. Separately, 56,406 shares are held indirectly through the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which Kang and his spouse serve as co-trustees.
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Insider Trade Summary
Net Seller: 67,796 shares
Net Sell
2 txns
Insider
Sun Kang
Role
Director
Sold
67,796 shs ($1.00M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common stock | 67,796 | $14.7884 | $1.00M |
| holding | Common stock | -- | -- | -- |
Holdings After Transaction:
Common stock — 1,280,854 shares (Direct);
Common stock — 56,406 shares (Indirect, See Footnote)
Footnotes (4)
- F1. This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.
- F2. The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $14.54 to $15.08, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
- F3. Includes 1,039,443 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit.
- F4. These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.
Key Figures
Shares sold: 67,796 shares
Average sale price: $14.7884 per share
Sale price range: $14.54–$15.08 per share
+3 more
6 metrics
Shares sold
67,796 shares
Open-market sale on May 21, 2026
Average sale price
$14.7884 per share
Average execution price for 67,796-share sale
Sale price range
$14.54–$15.08 per share
Multiple transactions within this range
Direct shares after transaction
1,280,854 shares
Total direct common stock following sale
Included RSUs
1,039,443 restricted stock units
Contingent rights to one share each, subject to vesting
Indirect trust holdings
56,406 shares
Held by KANG & CECILLIA SUN FAMILY REVOCABLE TRUST
Key Terms
restricted stock units, sell-to-cover, non-discretionary, vesting, +1 more
5 terms
restricted stock units financial
"Includes 1,039,443 restricted stock units, each of which represents a contingent right to receive one share"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
sell-to-cover financial
"pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations"
Sell-to-cover is when part of newly issued or exercised company stock is immediately sold to pay required taxes and fees, so the recipient keeps the remaining shares. For investors this matters because it reduces the number of shares insiders or employees actually hold after a grant, can create small, routine share sales that aren’t signal of cashing out, and slightly increases share supply on the market—like selling a portion of a paycheck to cover the tax bill.
non-discretionary financial
"This transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer"
vesting financial
"to fund tax withholding obligations in connection with the vesting of restricted stock units"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
Family Revocable Trust financial
"held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees"
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What insider transaction did Sun Kang report for Amprius Technologies (AMPX)?
Sun Kang reported selling 67,796 shares of Amprius Technologies common stock on May 21, 2026, at an average price of $14.7884 per share. The sale was executed under non-discretionary, sell-to-cover arrangements to fund tax withholding on vesting restricted stock units.
What is the role of restricted stock units in Sun Kang’s Amprius (AMPX) holdings?
Kang’s direct holdings include 1,039,443 restricted stock units, each convertible into one share upon satisfying vesting conditions. These RSUs form a significant part of his reported position and were the source of tax obligations that prompted the sell-to-cover stock sale.
What indirect Amprius Technologies (AMPX) holdings does Sun Kang report?
The filing shows 56,406 Amprius Technologies shares held indirectly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST. Sun Kang and his spouse serve as co-trustees of this trust, which is reported separately from his direct share and restricted stock unit holdings.