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Insider · CIK 0001294497

Staszak Jeffrey

CIK 0001294497 Name as filed on the most recent filing

Filed as Staszak Jeffrey (48)

64 transaction lines · from 48 filings · filed 2006-04-04 to 2012-04-04 The span is the filing dates this catalog holds, not the entity's full filing history. Absence here is not evidence of absence at the SEC.

How this page attributes a trade

A line appears here when the filing that carries it names this CIK as a reporting owner, not only when the parser picked this CIK as the line's primary owner. That is why a joint filing appears on both owners' pages rather than vanishing from the second one. The catalog never merges two CIKs into one person and never splits one CIK into two: identity here is the SEC's own identifier and nothing else.

01

Issuers this insider has filed against

Ordered by last-seen filing date, newest first. Roles are as filed on the Form 4 and are not normalised.

Fault

This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-21 05:23 UTC.

No issuer is recorded

The catalog holds no filing linking this CIK to an issuer.

02

Transactions

Every stored Form 4 line naming this reporting owner, newest transaction date first. Each row links to the filing it came from.

64 transactions · Newest transaction date first, id breaking the tie.

Fault

This container could not be filled from the store. It is showing nothing because a read failed, not because no insider filed: those are different facts and this catalog will not let one stand in for the other. The last ingest the store recorded was 2026-08-21 05:23 UTC.

Transactions filed by this insider
Direction Date Issuer Code Shares Price Value USD Filing
2012-04-02 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 20,000 disposed 33.42 668,400.00 Form 4, filing 0001209191-12-021943
2012-03-01 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 10,000 disposed 30.80 308,000.00 Form 4, filing 0001209191-12-015796
2012-02-09 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 75,000 disposed 32.00 2,400,000.00 Form 4, filing 0001209191-12-009668
2012-02-03 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 25,000 disposed 31.02 775,500.00 Form 4, filing 0001209191-12-008307
2012-02-01 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 10,000 disposed 30.15 301,500.00 Form 4, filing 0001209191-12-007512
2012-01-03 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 10,000 disposed 26.18 261,800.00 Form 4, filing 0001209191-12-002406
2011-12-05 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 10,000 disposed 25.00 250,000.00 Form 4, filing 0001209191-11-060076
2011-11-04 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 10,000 disposed 25.00 250,000.00 Form 4, filing 0001209191-11-055031
2011-10-27 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 20,000 disposed 25.00 500,000.00 Form 4, filing 0001209191-11-053151
2011-10-26 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 50,000 disposed 23.21 1,160,500.00 Form 4, filing 0001209191-11-053151
2011-08-01 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 10,000 disposed 25.32 253,200.00 Form 4, filing 0001209191-11-042164
2011-07-26 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 20,000 disposed 25.00 500,000.00 Form 4, filing 0001209191-11-041189
2011-06-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 22.16 138,500.00 Form 4, filing 0001209191-11-035426
2011-05-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 25.32 158,250.00 Form 4, filing 0001209191-11-029006
2011-04-18 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 23.53 147,062.50 Form 4, filing 0001209191-11-023465
2011-03-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 22.87 142,937.50 Form 4, filing 0001209191-11-018916
2011-02-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 25.98 162,375.00 Form 4, filing 0001209191-11-011230
2011-01-18 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 26.31 164,437.50 Form 4, filing 0001209191-11-004248
2010-12-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 23.54 147,125.00 Form 4, filing 0001209191-11-001001
2010-12-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 23.54 147,125.00 Form 4, filing 0001209191-10-061446
2010-11-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 20.62 128,875.00 Form 4, filing 0001209191-10-055928
2010-10-18 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 20.61 128,812.50 Form 4, filing 0001209191-10-051064
2010-09-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 21.26 132,875.00 Form 4, filing 0001209191-10-046950
2010-08-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 20.00 125,000.00 Form 4, filing 0001209191-10-042966
2010-07-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 6,250 disposed 27.34 170,856.25 Form 4, filing 0001209191-10-039037
2010-06-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,500 disposed 24.09 204,782.85 Form 4, filing 0001209191-10-034272
2010-06-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,000 disposed 24.09 192,736.80 Form 4, filing 0001209191-10-034272
2010-05-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,500 disposed 21.92 186,320.00 Form 4, filing 0001209191-10-028227
2010-05-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,000 disposed 21.92 175,360.00 Form 4, filing 0001209191-10-028227
2010-04-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,500 disposed 27.90 237,150.00 Form 4, filing 0001209191-10-022658
2010-04-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,000 disposed 27.90 223,200.00 Form 4, filing 0001209191-10-022658
2010-03-17 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 100,000 disposed 25.00 2,500,000.00 Form 4, filing 0001209191-10-018014
2010-03-15 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,500 disposed 22.73 193,205.00 Form 4, filing 0001209191-10-017625
2010-03-15 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,000 disposed 22.73 181,840.00 Form 4, filing 0001209191-10-017625
2010-02-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,500 disposed 22.48 191,080.00 Form 4, filing 0001209191-10-010541
2010-02-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,000 disposed 22.48 179,840.00 Form 4, filing 0001209191-10-010541
2010-02-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,500 disposed 22.48 191,080.00 Form 4, filing 0001209191-10-010883
2010-02-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 8,000 disposed 22.48 179,840.00 Form 4, filing 0001209191-10-010883
2010-01-26 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 29,750 disposed 20.05 596,487.50 Form 4, filing 0001209191-10-005271
2010-01-26 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 28,000 disposed 20.05 561,400.00 Form 4, filing 0001209191-10-005271
2010-01-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,250 disposed 17.89 76,032.50 Form 4, filing 0001209191-10-003432
2010-01-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,000 disposed 17.89 71,560.00 Form 4, filing 0001209191-10-003432
2009-12-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,000 disposed 18.07 72,280.00 Form 4, filing 0001209191-09-057393
2009-12-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,250 disposed 18.07 76,797.50 Form 4, filing 0001209191-09-057393
2009-11-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,250 disposed 15.00 63,750.00 Form 4, filing 0001209191-09-053008
2009-11-16 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,000 disposed 15.00 60,000.00 Form 4, filing 0001209191-09-053008
2009-10-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,250 disposed 18.33 77,902.50 Form 4, filing 0001209191-09-048768
2009-10-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,000 disposed 18.33 73,320.00 Form 4, filing 0001209191-09-048768
2009-09-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,250 disposed 18.50 78,625.00 Form 4, filing 0001209191-09-044425
2009-09-14 Volterra Semiconductor Corp
VLTR 		S, Open-market sale 4,000 disposed 18.50 74,000.00 Form 4, filing 0001209191-09-044425

This column is intentionally blank

No transaction line is stored for this reporting owner, though the catalog holds filings naming them. That happens when the filings report only holdings or only positions the store does not carry, and when a parse failed; each filing page states its own parse status.

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Codes on this page
S, Open-market sale
Open-market sale

Every value is as reported on the Form 4. A price the filing did not report is marked Not reported and no value is computed from it. Codes outside the open market, drawn in grey behind a dashed rule, are compensation and administrative machinery rather than a decision to trade at the prevailing price.

What this insider's stored lines contain

Exact counts over every stored line for this entity. This is a statement of composition, not a filter: the only filter this page offers is the open-market one above, because that is the only one an index serves today.

  • Open-market purchase 0
  • Open-market sale 64
  • Option exercise 0
  • Grant or award 0
  • Tax withholding 0
  • Disposition to the issuer 0
  • In-the-money option exercise 0

How to cite this page

ebomi catalog. Staszak Jeffrey, insider transactions. Retrieved 2026-08-21 from https://ebomi.com/insider/0001294497

Balogh, A. Insider trading. Scientific Data 10, 237 (2023) doi:10.1038/s41597-023-02147-6

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