Stepien Thomas M
Chief Executive Officer
- Shares
- 8,000
- Price
- $10.03
- Value
- $80,240
AMPX
1 seller account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.
Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.
3-month balance
−$80,240
0 buyers · 1 sellers
12-month purchases
$0.00
0 distinct insiders
12-month sales
$80,198,952
6 distinct insiders
Highlighted alerts
11
13 Rule 10b5-1 trades treated as informational
Buying cluster · 30 days
Fewer than three distinct buyers
CEO/CFO purchases · 12 months
No executive purchases found
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The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.
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. The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $10.10 to $10.48, 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. Includes 568,750 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. These transfers were made on the same date as bona fide gifts. These securities were transferred by the reporting person to the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees. These securities are held by the Rogers Stepien Family Revocable Trust, for which the reporting person and his spouse are co-trustees.
Reason: tax_withholding. The filing footnotes identify tax withholding.
Voluntary purchases and sales; administrative noise stays hidden.
Stepien Thomas M
Chief Executive Officer
DIXON DONALD R
Director
DIXON DONALD R
Director
Stepien Thomas M
Chief Executive Officer
DIXON DONALD R
Director
Sun Kang
Director
Sun Kang
Director
Sun Kang
Director
Sun Kang
Director
HSIEH Wen Hsuan
Director
HSIEH Wen Hsuan
Director
Chu Steven
Director
Chu Steven
Director
Chu Steven
Director
Chu Steven
Director
Stefan Constantin Ionel
Chief Technology Officer
Stefan Constantin Ionel
Chief Technology Officer
Stefan Constantin Ionel
Chief Technology Officer
Stefan Constantin Ionel
Chief Technology Officer
Sun Kang
Director
Sun Kang
Director
Sun Kang
Director
Stefan Constantin Ionel
Chief Technology Officer
Sun Kang
Chief Executive Officer
| Date | Insider | Transaction | Shares | Price | Value | Reading |
|---|---|---|---|---|---|---|
| Aug 24, 2026 | Stepien Thomas M Chief Executive Officer | Sale | 8,000 | $10.03 | $80,240 | |
| Jun 15, 2026 | DIXON DONALD R Director | Sale | 85,000 | $17.17 | $1,459,212 | |
| Jun 09, 2026 | DIXON DONALD R Director | Sale | 40,000 | $19.13 | $765,200 | |
| Jun 04, 2026 | Stepien Thomas M Chief Executive Officer | Sale | 2,000 | $20.97 | $41,940 | |
| May 26, 2026 | DIXON DONALD R Director | Sale | 17,895 | $17.90 | $320,253 | |
| Apr 01, 2026 | Sun Kang Director | Sale | 249,037 | $16.78 | $4,179,563 | |
| Apr 01, 2026 | Sun Kang Director | Sale | 1,250,963 | $15.73 | $19,681,151 | |
| Mar 23, 2026 | Sun Kang Director | Sale | 65,046 | $19.06 | $1,239,705 | |
| Mar 23, 2026 | Sun Kang Director | Sale | 152,823 | $18.69 | $2,855,696 | |
| Mar 12, 2026 | HSIEH Wen Hsuan Director | Sale | 130,646 | $18.22 | $2,380,788 | |
| Mar 12, 2026 | HSIEH Wen Hsuan Director | Sale | 282,500 | $18.55 | $5,239,245 | |
| Mar 12, 2026 | Chu Steven Director | Sale | 5,565 | $18.53 | $103,145 | |
| Mar 12, 2026 | Chu Steven Director | Sale | 50,000 | $18.21 | $910,740 | |
| Mar 12, 2026 | Chu Steven Director | Sale | 100,000 | $18.65 | $1,864,670 | |
| Mar 10, 2026 | Chu Steven Director | Sale | 166,632 | $17.92 | $2,985,429 | |
| Jan 28, 2026 | Stefan Constantin Ionel Chief Technology Officer | Sale | 39,690 | $12.00 | $476,351 | |
| Jan 23, 2026 | Stefan Constantin Ionel Chief Technology Officer | Sale | 1,600 | $12.00 | $19,200 | |
| Jan 22, 2026 | Stefan Constantin Ionel Chief Technology Officer | Sale | 492,827 | $12.04 | $5,931,912 | |
| Jan 21, 2026 | Stefan Constantin Ionel Chief Technology Officer | Sale | 73,280 | $12.00 | $879,411 | |
| Jan 20, 2026 | Sun Kang Director | Sale | 43,185 | $11.03 | $476,274 | |
| Jan 16, 2026 | Sun Kang Director | Sale | 950,548 | $11.07 | $10,518,669 | |
| Jan 12, 2026 | Sun Kang Director | Sale | 506,267 | $10.10 | $5,111,474 | |
| Dec 11, 2025 | Stefan Constantin Ionel Chief Technology Officer | Sale | 198,255 | $10.51 | $2,083,382 | |
| Nov 17, 2025 | Sun Kang Chief Executive Officer | Sale | 1,000,000 | $10.60 | $10,595,300 |
“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.