Pfeifer John C

Director · Officer · OSK, JHX

As of 2026-09-16, Pfeifer John C has 32 Form 4 transactions on record across 2 companies — 16 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.

Reconstructed holdings

Direct: $22.0MIndirect: $0$22.0Mas of 2026-09-16
  • Direct $22.0M
  • Indirect $0
OSKdirect150,669 sh$21.9M
JHXdirect5,361 sh$144K

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

OSK · 31 trades
2026-09-11: Sale, 778 sh ($117K)2026-02-20: Option exercise, 23,777 sh ($4.2M)2026-02-20: Option exercise, 17,896 sh ($3.1M)2026-02-20: Option exercise, 11,993 sh ($2.1M)2026-02-20: Withheld for tax, 11,176 sh ($2.0M)2026-02-20: Withheld for tax, 8,412 sh ($1.5M)2026-02-20: Withheld for tax, 5,355 sh ($940K)2026-02-20: Option exercise, 11,993 sh ($0)2026-02-19: Option exercise, 13,442 sh ($2.3M)2026-02-19: Withheld for tax, 6,002 sh ($1.0M)2026-02-19: Option exercise, 13,442 sh ($0)2026-02-17: Option exercise, 15,718 sh ($2.6M)2026-02-17: Withheld for tax, 7,019 sh ($1.2M)2026-02-17: Option exercise, 15,718 sh ($0)2026-02-16: Award / grant, 29,957 sh ($0)2025-02-21: Option exercise, 9,790 sh ($1.0M)2025-02-21: Option exercise, 7,863 sh ($811K)2025-02-21: Option exercise, 5,914 sh ($610K)2025-02-21: Withheld for tax, 4,602 sh ($475K)2025-02-21: Withheld for tax, 3,511 sh ($362K)2025-02-21: Option exercise, 3,122 sh ($322K)2025-02-21: Withheld for tax, 2,780 sh ($287K)2025-02-21: Withheld for tax, 1,468 sh ($151K)2025-02-21: Option exercise, 7,863 sh ($0)2025-02-20: Option exercise, 11,778 sh ($1.3M)2025-02-20: Withheld for tax, 5,259 sh ($580K)2025-02-20: Option exercise, 11,778 sh ($0)2025-02-19: Option exercise, 13,201 sh ($1.4M)2025-02-19: Withheld for tax, 5,895 sh ($647K)2025-02-19: Option exercise, 13,201 sh ($0)2025-02-17: Award / grant, 46,555 sh ($0)
JHX · 1 trade
2026-06-15: Award / grant, 1,081 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-09-11OSKSale778 @ $150.00$117K−0.5% of holding150,669Form 4
31 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-15JHXAward / grant1,0815,361Form 4
2026-02-20OSKOption exercise23,777155,909Form 4
2026-02-20OSKOption exercise17,896140,544Form 4
2026-02-20OSKOption exercise11,993156,726Form 4
2026-02-20OSKWithheld for tax11,176144,733Form 4
2026-02-20OSKWithheld for tax8,412132,132Form 4
2026-02-20OSKWithheld for tax5,355151,371Form 4
2026-02-20OSKOption exercise11,9930Form 4
2026-02-19OSKOption exercise13,442128,650Form 4
2026-02-19OSKWithheld for tax6,002122,648Form 4
2026-02-19OSKOption exercise13,44213,442Form 4
2026-02-17OSKOption exercise15,718122,571Form 4
2026-02-17OSKWithheld for tax7,019115,552Form 4
2026-02-17OSKOption exercise15,71831,438Form 4
2026-02-16OSKAward / grant29,95729,957Form 4
2025-02-21OSKOption exercise9,790103,531Form 4
2025-02-21OSKOption exercise7,863109,926Form 4
2025-02-21OSKOption exercise5,914104,843Form 4
2025-02-21OSKWithheld for tax4,60298,929Form 4
2025-02-21OSKWithheld for tax3,511106,415Form 4
2025-02-21OSKOption exercise3,12295,209Form 4
2025-02-21OSKWithheld for tax2,780102,063Form 4
2025-02-21OSKWithheld for tax1,46893,741Form 4
2025-02-21OSKOption exercise7,8630Form 4
2025-02-20OSKOption exercise11,77897,346Form 4
2025-02-20OSKWithheld for tax5,25992,087Form 4
2025-02-20OSKOption exercise11,77811,779Form 4
2025-02-19OSKOption exercise13,20191,456Form 4
2025-02-19OSKWithheld for tax5,89585,568Form 4
2025-02-19OSKOption exercise13,20126,403Form 4
2025-02-17OSKAward / grant46,55546,555Form 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.