Matthew Stumpf
Insider
First SEC filing: Jan. 5, 2024 · Latest: May 29, 2026
Insider at
Insider transactions
0 buys (P)
23 sells (S)
Net: $-7,950,154
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 20, 2026 | APP | F | 2,021 | $308.77 | $624,024 | 175,429 Direct | -1.14% | Disposed | -13.1% (price as of 2026-10-02) |
| May 28, 2026 | APP | S 10b5-1 | 9,052 | $600.00 | $5,431,200 | 177,450 Direct | -4.85% | Disposed | -55.3% (price as of 2026-10-02) |
| May 20, 2026 | APP | F | 2,341 | $482.28 | $1,129,017 | 186,502 Direct | -1.24% | Disposed | -44.4% (price as of 2026-10-02) |
| Feb. 20, 2026 | APP | F | 2,362 | $418.68 | $988,922 | 188,799 Direct | -1.24% | Disposed | -35.9% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 80 | $492.26 | $39,381 | 195,965 Direct | -0.04% | Disposed | -45.5% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 200 | $495.45 | $99,090 | 195,765 Direct | -0.10% | Disposed | -45.9% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 120 | $496.33 | $59,560 | 195,645 Direct | -0.06% | Disposed | -46.0% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 80 | $498.18 | $39,854 | 195,565 Direct | -0.04% | Disposed | -46.2% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 160 | $500.24 | $80,038 | 195,405 Direct | -0.08% | Disposed | -46.4% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 80 | $501.88 | $40,150 | 195,325 Direct | -0.04% | Disposed | -46.6% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 80 | $504.32 | $40,346 | 195,245 Direct | -0.04% | Disposed | -46.8% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 160 | $506.46 | $81,034 | 195,085 Direct | -0.08% | Disposed | -47.0% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 200 | $509.67 | $101,934 | 194,885 Direct | -0.10% | Disposed | -47.4% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 80 | $510.72 | $40,858 | 194,805 Direct | -0.04% | Disposed | -47.5% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 160 | $511.63 | $81,861 | 194,645 Direct | -0.08% | Disposed | -47.6% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 230 | $512.73 | $117,928 | 194,415 Direct | -0.12% | Disposed | -47.7% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 80 | $514.08 | $41,126 | 194,335 Direct | -0.04% | Disposed | -47.8% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 311 | $515.73 | $160,392 | 194,024 Direct | -0.16% | Disposed | -48.0% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 120 | $516.73 | $62,008 | 193,904 Direct | -0.06% | Disposed | -48.1% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 200 | $519.49 | $103,898 | 193,704 Direct | -0.10% | Disposed | -48.4% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 245 | $520.29 | $127,471 | 193,459 Direct | -0.13% | Disposed | -48.4% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 1,338 | $521.70 | $698,035 | 192,121 Direct | -0.69% | Disposed | -48.6% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 200 | $523.05 | $104,610 | 191,921 Direct | -0.10% | Disposed | -48.7% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 440 | $524.88 | $230,947 | 191,481 Direct | -0.23% | Disposed | -48.9% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 240 | $525.97 | $126,233 | 191,241 Direct | -0.13% | Disposed | -49.0% (price as of 2026-10-02) |
| Nov. 21, 2025 | APP | S 10b5-1 | 80 | $527.50 | $42,200 | 191,161 Direct | -0.04% | Disposed | -49.2% (price as of 2026-10-02) |
| Nov. 20, 2025 | APP | F | 5,874 | $520.82 | $3,059,297 | 196,045 Direct | -2.91% | Disposed | -48.5% (price as of 2026-10-02) |
| Oct. 30, 2025 | APP | A | 20,236 | · | · | 201,893 Direct | +11.14% | Acquired | (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 2,537 | $411.65 | $1,044,356 | 183,994 Direct | -1.36% | Disposed | -34.8% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 100 | $415.71 | $41,571 | 183,894 Direct | -0.05% | Disposed | -35.5% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 200 | $417.13 | $83,426 | 183,694 Direct | -0.11% | Disposed | -35.7% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 937 | $418.53 | $392,163 | 182,757 Direct | -0.51% | Disposed | -35.9% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 200 | $419.46 | $83,892 | 182,557 Direct | -0.11% | Disposed | -36.1% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 200 | $420.59 | $84,118 | 182,357 Direct | -0.11% | Disposed | -36.2% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 100 | $422.89 | $42,289 | 182,257 Direct | -0.05% | Disposed | -36.6% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 100 | $424.30 | $42,430 | 182,157 Direct | -0.05% | Disposed | -36.8% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 200 | $426.38 | $85,276 | 181,957 Direct | -0.11% | Disposed | -37.1% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 200 | $429.06 | $85,812 | 181,757 Direct | -0.11% | Disposed | -37.5% (price as of 2026-10-02) |
| Aug. 21, 2025 | APP | S 10b5-1 | 100 | $431.20 | $43,120 | 181,657 Direct | -0.06% | Disposed | -37.8% (price as of 2026-10-02) |
| Aug. 20, 2025 | APP | F | 5,890 | $412.38 | $2,428,918 | 186,531 Direct | -3.06% | Disposed | -35.0% (price as of 2026-10-02) |
| June 6, 2025 | APP | S 10b5-1 | 4,864 | $421.00 | $2,047,744 | 197,271 Direct | -2.41% | Disposed | -36.3% (price as of 2026-10-02) |
| June 6, 2025 | APP | S 10b5-1 | 4,850 | $425.00 | $2,061,250 | 192,421 Direct | -2.46% | Disposed | -36.9% (price as of 2026-10-02) |
| May 20, 2025 | APP | F | 5,909 | $363.06 | $2,145,322 | 202,135 Direct | -2.84% | Disposed | -26.1% (price as of 2026-10-02) |
| Feb. 20, 2025 | APP | F | 5,947 | $450.01 | $2,676,209 | 207,389 Direct | -2.79% | Disposed | -40.4% (price as of 2026-10-02) |
| Nov. 22, 2024 | APP | S | 11,899 | $332.19 | $3,952,729 | 222,538 Direct | -5.08% | Disposed | -19.3% (price as of 2026-10-02) |
| Nov. 22, 2024 | APP | S | 8,002 | $333.20 | $2,666,266 | 214,536 Direct | -3.60% | Disposed | -19.5% (price as of 2026-10-02) |
| Nov. 22, 2024 | APP | S | 1,200 | $333.86 | $400,632 | 213,336 Direct | -0.56% | Disposed | -19.7% (price as of 2026-10-02) |
| Nov. 20, 2024 | APP | F | 30,424 | $325.22 | $9,894,493 | 234,437 Direct | -11.49% | Disposed | -17.5% (price as of 2026-10-02) |
| Oct. 30, 2024 | APP | A | 40,683 | · | · | 264,206 Direct | +18.20% | Acquired | (price as of 2026-10-02) |
| Aug. 20, 2024 | APP | F | 30,935 | $86.58 | $2,678,352 | 223,523 Direct | -12.16% | Disposed | 209.8% (price as of 2026-10-02) |
| Aug. 13, 2024 | APP | S | 60,215 | $79.63 | $4,794,920 | 254,858 Direct | -19.11% | Disposed | 236.8% (price as of 2026-10-02) |
| Aug. 13, 2024 | APP | S | 400 | $80.17 | $32,068 | 254,458 Direct | -0.16% | Disposed | 234.6% (price as of 2026-10-02) |
| May 20, 2024 | APP | F | 47,819 | $84.57 | $4,044,053 | 315,073 Direct | -13.18% | Disposed | 217.2% (price as of 2026-10-02) |
| March 14, 2024 | APP | M | 4,686 | $5.05 | $23,664 | 365,039 Direct | +1.30% | Acquired | 5211.3% (price as of 2026-10-02) |
| March 14, 2024 | APP | S | 2,775 | $63.30 | $175,658 | 362,264 Direct | -0.76% | Disposed | 323.7% (price as of 2026-10-02) |
| March 14, 2024 | APP | M | 4,686 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 20, 2024 | APP | F | 15,096 | $57.33 | $865,454 | 360,353 Direct | -4.02% | Disposed | 367.9% (price as of 2026-10-02) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| March 14, 2024 | APP | Stock Option (Right to Buy) | Class A Common Stock | $5.05 | March 18, 2030 | 4,686 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $400,000 | · | · | · | · | · | $27,324 | $12,986,191 |
| 2024 | $400,000 | · | · | · | · | · | $15,184 | $7,398,421 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.