VONDRASEK MARK R

Director · Officer · H, DENN

As of 2026-09-16, VONDRASEK MARK R has 67 Form 4 transactions on record across 2 companies — 39 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Pattern in the record: open-market sales filed in March in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $1.7MIndirect: $0$1.7Mas of 2026-09-16
  • Direct $1.7M
  • Indirect $0
Hdirect8,988 sh$1.4M
DENNdirect38,697 sh$242K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

H · 61 trades
2026-05-29: Sale, 6,100 sh ($1.1M)2026-05-29: Sale, 2,100 sh ($391K)2026-05-20: Withheld for tax, 4,414 sh ($764K)2026-05-20: Award / grant, 9,900 sh ($0)2026-03-23: Sale, 6,500 sh ($957K)2026-03-19: Award / grant, 9,944 sh ($0)2026-03-19: Award / grant, 4,468 sh ($0)2026-03-16: Withheld for tax, 748 sh ($106K)2026-03-16: Withheld for tax, 555 sh ($78K)2026-03-16: Withheld for tax, 494 sh ($70K)2026-03-16: Withheld for tax, 382 sh ($54K)2026-03-16: Option exercise, 1,777 sh ($0)2026-03-16: Option exercise, 1,319 sh ($0)2026-03-16: Option exercise, 907 sh ($0)2026-03-16: Option exercise, 1,174 sh ($0)2026-03-16: Option exercise, 1,174 sh2026-03-16: Option exercise, 1,319 sh2026-03-16: Option exercise, 907 sh2026-03-16: Option exercise, 1,174 sh2026-03-16: Option exercise, 1,777 sh2026-03-16: Option exercise, 1,777 sh2026-03-16: Option exercise, 1,319 sh2026-03-16: Option exercise, 907 sh2026-03-04: Withheld for tax, 3,678 sh ($596K)2026-03-04: Withheld for tax, 2,298 sh ($372K)2026-03-04: Award / grant, 9,005 sh ($0)2026-03-04: Award / grant, 5,175 sh ($0)2025-11-11: Sale, 4,930 sh ($769K)2025-11-11: Disposition, 4,244 sh ($662K)2025-11-11: Option exercise, 6,960 sh ($662K)2025-11-11: Disposition, 2,363 sh ($368K)2025-11-11: Option exercise, 4,577 sh ($368K)2025-11-11: Option exercise, 4,577 sh ($0)2025-11-11: Option exercise, 6,960 sh ($0)2025-08-13: Sale, 2,337 sh ($328K)2025-03-21: Sale, 9,900 sh ($1.2M)2025-03-21: Sale, 100 sh ($12K)2025-03-18: Award / grant, 12,151 sh ($0)2025-03-18: Award / grant, 5,277 sh ($0)2025-03-16: Withheld for tax, 3,308 sh ($404K)2025-03-16: Withheld for tax, 1,035 sh ($126K)2025-03-16: Withheld for tax, 788 sh ($96K)2025-03-16: Withheld for tax, 522 sh ($64K)2025-03-16: Withheld for tax, 403 sh ($49K)2025-03-16: Option exercise, 1,774 sh ($0)2025-03-16: Option exercise, 2,331 sh ($0)2025-03-16: Option exercise, 1,174 sh ($0)2025-03-16: Option exercise, 907 sh ($0)2025-03-16: Option exercise, 7,458 sh ($0)2025-03-16: Option exercise, 7,458 sh2025-03-16: Option exercise, 1,174 sh2025-03-16: Option exercise, 907 sh2025-03-16: Option exercise, 1,774 sh2025-03-16: Option exercise, 7,458 sh2025-03-16: Option exercise, 2,331 sh2025-03-16: Option exercise, 1,174 sh2025-03-16: Option exercise, 2,331 sh2025-03-16: Option exercise, 907 sh2025-03-16: Option exercise, 1,774 sh2025-03-04: Withheld for tax, 3,893 sh ($534K)2025-03-04: Award / grant, 9,844 sh ($0)
DENN · 6 trades
2026-01-16: Disposition, 38,697 sh ($242K)2026-01-16: Option exercise, 13,922 sh ($0)2026-01-16: Option exercise, 24,775 sh ($0)2026-01-16: Option exercise, 38,697 sh2026-01-16: Option exercise, 38,697 sh2025-05-14: Award / grant, 24,775 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-05-29HSale6,100 @ $185.00$1.1M−35.5% of holding11,088Form 4
2026-05-29HSale2,100 @ $186.00$391K−18.9% of holding8,988Form 4
2026-03-23HSale6,500 @ $147.18$957K−35.7% of holding11,702Form 4
2025-11-11HSale4,930 @ $155.91$769K−41.3% of holding7,000Form 4
2025-08-13HSale2,337 @ $140.30$328K−25.0% of holding7,000Form 4
2025-03-21HSale9,900 @ $116.80$1.2M−51.2% of holding9,437Form 4
2025-03-21HSale100 @ $117.23$12K−1.1% of holding9,337Form 4
60 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-05-20HWithheld for tax4,41417,188Form 4
2026-05-20HAward / grant9,90021,602Form 4
2026-03-19HAward / grant9,9449,944Form 4
2026-03-19HAward / grant4,4684,468Form 4
2026-03-16HWithheld for tax74816,233Form 4
2026-03-16HWithheld for tax55518,202Form 4
2026-03-16HWithheld for tax49416,913Form 4
2026-03-16HWithheld for tax38217,438Form 4
2026-03-16HOption exercise1,7770Form 4
2026-03-16HOption exercise1,3193,958Form 4
2026-03-16HOption exercise9071,814Form 4
2026-03-16HOption exercise1,1741,177Form 4
2026-03-16HOption exercise1,17417,407Form 4
2026-03-16HOption exercise1,31918,757Form 4
2026-03-16HOption exercise90717,820Form 4
2026-03-16HOption exercise1,17417,407Form 4
2026-03-16HOption exercise1,77716,981Form 4
2026-03-16HOption exercise1,77716,981Form 4
2026-03-16HOption exercise1,31918,757Form 4
2026-03-16HOption exercise90717,820Form 4
2026-03-04HWithheld for tax3,67815,204Form 4
2026-03-04HWithheld for tax2,2989,877Form 4
2026-03-04HAward / grant9,00518,882Form 4
2026-03-04HAward / grant5,17512,175Form 4
2026-01-16DENNDisposition38,6970Form 4
2026-01-16DENNOption exercise13,9220Form 4
2026-01-16DENNOption exercise24,7750Form 4
2026-01-16DENNOption exercise38,69738,697Form 4
2026-01-16DENNOption exercise38,69738,697Form 4
2025-11-11HDisposition4,24411,930Form 4
2025-11-11HOption exercise6,96016,174Form 4
2025-11-11HDisposition2,3639,214Form 4
2025-11-11HOption exercise4,57711,577Form 4
2025-11-11HOption exercise4,5770Form 4
2025-11-11HOption exercise6,9603,482Form 4
2025-05-14DENNAward / grant24,77538,697Form 4
2025-03-18HAward / grant12,15112,151Form 4
2025-03-18HAward / grant5,2775,277Form 4
2025-03-16HWithheld for tax3,30817,195Form 4
2025-03-16HWithheld for tax1,03513,045Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.