Stumpf Matthew

Officer · APP

As of 2026-09-16, Stumpf Matthew has 44 Form 4 transactions on record across 1 company — 28 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: $57.3MIndirect: $0$57.3Mas of 2026-09-16
  • Direct $57.3M
  • Indirect $0
APPdirect175,429 sh$57.3M

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

APP · 44 trades
2026-08-20: Withheld for tax, 2,021 sh ($624K)2026-05-28: Sale, 9,052 sh ($5.4M)2026-05-20: Withheld for tax, 2,341 sh ($1.1M)2026-02-20: Withheld for tax, 2,362 sh ($989K)2025-11-21: Sale, 1,338 sh ($698K)2025-11-21: Sale, 440 sh ($231K)2025-11-21: Sale, 311 sh ($160K)2025-11-21: Sale, 245 sh ($127K)2025-11-21: Sale, 240 sh ($126K)2025-11-21: Sale, 230 sh ($118K)2025-11-21: Sale, 200 sh ($105K)2025-11-21: Sale, 200 sh ($104K)2025-11-21: Sale, 200 sh ($102K)2025-11-21: Sale, 200 sh ($99K)2025-11-21: Sale, 160 sh ($82K)2025-11-21: Sale, 160 sh ($81K)2025-11-21: Sale, 160 sh ($80K)2025-11-21: Sale, 120 sh ($62K)2025-11-21: Sale, 120 sh ($60K)2025-11-21: Sale, 80 sh ($42K)2025-11-21: Sale, 80 sh ($41K)2025-11-21: Sale, 80 sh ($41K)2025-11-21: Sale, 80 sh ($40K)2025-11-21: Sale, 80 sh ($40K)2025-11-21: Sale, 80 sh ($40K)2025-11-21: Sale, 80 sh ($39K)2025-11-20: Withheld for tax, 5,874 sh ($3.1M)2025-10-30: Award / grant, 20,236 sh ($0)2025-08-21: Sale, 2,537 sh ($1.0M)2025-08-21: Sale, 937 sh ($392K)2025-08-21: Sale, 200 sh ($86K)2025-08-21: Sale, 200 sh ($85K)2025-08-21: Sale, 200 sh ($84K)2025-08-21: Sale, 200 sh ($84K)2025-08-21: Sale, 200 sh ($83K)2025-08-21: Sale, 100 sh ($43K)2025-08-21: Sale, 100 sh ($42K)2025-08-21: Sale, 100 sh ($42K)2025-08-21: Sale, 100 sh ($42K)2025-08-20: Withheld for tax, 5,890 sh ($2.4M)2025-06-06: Sale, 4,850 sh ($2.1M)2025-06-06: Sale, 4,864 sh ($2.0M)2025-05-20: Withheld for tax, 5,909 sh ($2.1M)2025-02-20: Withheld for tax, 5,947 sh ($2.7M)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-05-28APPSale9,052 @ $600.00$5.4M−4.9% of holding177,450Form 4
2025-11-21APPSale1,338 @ $521.70$698K−0.7% of holding192,121Form 4
2025-11-21APPSale440 @ $524.88$231K−0.2% of holding191,481Form 4
2025-11-21APPSale311 @ $515.73$160K−0.2% of holding194,024Form 4
2025-11-21APPSale245 @ $520.29$127K−0.1% of holding193,459Form 4
2025-11-21APPSale240 @ $525.97$126K−0.1% of holding191,241Form 4
2025-11-21APPSale230 @ $512.73$118K−0.1% of holding194,415Form 4
2025-11-21APPSale200 @ $523.05$105K−0.1% of holding191,921Form 4
2025-11-21APPSale200 @ $519.49$104K−0.1% of holding193,704Form 4
2025-11-21APPSale200 @ $509.67$102K−0.1% of holding194,885Form 4
2025-11-21APPSale200 @ $495.45$99K−0.1% of holding195,765Form 4
2025-11-21APPSale160 @ $511.63$82K−0.1% of holding194,645Form 4
2025-11-21APPSale160 @ $506.46$81K−0.1% of holding195,085Form 4
2025-11-21APPSale160 @ $500.24$80K−0.1% of holding195,405Form 4
2025-11-21APPSale120 @ $516.73$62K−0.1% of holding193,904Form 4
2025-11-21APPSale120 @ $496.33$60K−0.1% of holding195,645Form 4
2025-11-21APPSale80 @ $527.50$42K−0.0% of holding191,161Form 4
2025-11-21APPSale80 @ $514.08$41K−0.0% of holding194,335Form 4
2025-11-21APPSale80 @ $510.72$41K−0.0% of holding194,805Form 4
2025-11-21APPSale80 @ $504.32$40K−0.0% of holding195,245Form 4
2025-11-21APPSale80 @ $501.88$40K−0.0% of holding195,325Form 4
2025-11-21APPSale80 @ $498.18$40K−0.0% of holding195,565Form 4
2025-11-21APPSale80 @ $492.26$39K−0.0% of holding195,965Form 4
2025-08-21APPSale2,537 @ $411.65$1.0M−1.4% of holding183,994Form 4
2025-08-21APPSale937 @ $418.53$392K−0.5% of holding182,757Form 4
2025-08-21APPSale200 @ $429.06$86K−0.1% of holding181,757Form 4
2025-08-21APPSale200 @ $426.38$85K−0.1% of holding181,957Form 4
2025-08-21APPSale200 @ $420.59$84K−0.1% of holding182,357Form 4
2025-08-21APPSale200 @ $419.46$84K−0.1% of holding182,557Form 4
2025-08-21APPSale200 @ $417.13$83K−0.1% of holding183,694Form 4
2025-08-21APPSale100 @ $431.20$43K−0.1% of holding181,657Form 4
2025-08-21APPSale100 @ $424.30$42K−0.1% of holding182,157Form 4
2025-08-21APPSale100 @ $422.89$42K−0.1% of holding182,257Form 4
2025-08-21APPSale100 @ $415.71$42K−0.1% of holding183,894Form 4
2025-06-06APPSale4,850 @ $425.00$2.1M−2.5% of holding192,421Form 4
2025-06-06APPSale4,864 @ $421.00$2.0M−2.4% of holding197,271Form 4
8 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-20APPWithheld for tax2,021175,429Form 4
2026-05-20APPWithheld for tax2,341186,502Form 4
2026-02-20APPWithheld for tax2,362188,799Form 4
2025-11-20APPWithheld for tax5,874196,045Form 4
2025-10-30APPAward / grant20,236201,893Form 4
2025-08-20APPWithheld for tax5,890186,531Form 4
2025-05-20APPWithheld for tax5,909202,135Form 4
2025-02-20APPWithheld for tax5,947207,389Form 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.