Karp Alexander C.

Director · Officer · PLTR

As of 2026-09-16, Karp Alexander C. has 168 Form 4 transactions on record across 1 company — 96 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 August in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $1.1BIndirect: $0$1.1Bas of 2026-09-16
  • Direct $1.1B
  • Indirect $0
PLTRdirect6,522,258 sh$1.1B

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

PLTR · 168 trades
2026-08-20: Sale, 306,544 sh ($53.6M)2026-08-20: Sale, 63,629 sh ($11.2M)2026-08-20: Sale, 62,498 sh ($10.9M)2026-08-20: Sale, 19,493 sh ($3.4M)2026-08-20: Sale, 11,602 sh ($2.0M)2026-08-20: Sale, 11,200 sh ($2.0M)2026-08-20: Sale, 11,378 sh ($2.0M)2026-08-20: Sale, 4,200 sh ($725K)2026-08-20: Sale, 1,304 sh ($230K)2026-08-20: Sale, 500 sh ($88K)2026-08-20: Conversion, 402,348 sh ($0)2026-08-20: Conversion, 90,000 sh ($0)2026-08-20: Option exercise, 97,500 sh ($0)2026-08-20: Option exercise, 97,500 sh ($0)2026-08-20: Option exercise, 877,500 sh ($0)2026-08-20: Option exercise, 877,500 sh ($0)2026-08-20: Conversion, 402,348 sh2026-08-20: Conversion, 402,348 sh2026-08-20: Conversion, 90,000 sh2026-08-20: Conversion, 402,348 sh2026-08-20: Conversion, 90,000 sh2026-08-20: Conversion, 402,348 sh2026-08-20: Conversion, 90,000 sh2026-08-20: Conversion, 402,348 sh2026-08-20: Conversion, 90,000 sh2026-08-20: Conversion, 402,348 sh2026-08-20: Conversion, 90,000 sh2026-08-20: Conversion, 90,000 sh2026-08-20: Conversion, 402,348 sh2026-08-20: Conversion, 90,000 sh2026-08-20: Conversion, 402,348 sh2026-08-20: Conversion, 90,000 sh2026-05-20: Sale, 224,009 sh ($30.5M)2026-05-20: Sale, 122,195 sh ($16.7M)2026-05-20: Sale, 27,595 sh ($3.7M)2026-05-20: Sale, 17,310 sh ($2.3M)2026-05-20: Sale, 6,635 sh ($882K)2026-05-20: Option exercise, 877,500 sh ($0)2026-05-20: Option exercise, 97,500 sh ($0)2026-05-20: Conversion, 397,744 sh ($0)2026-05-20: Option exercise, 877,500 sh ($0)2026-05-20: Option exercise, 97,500 sh ($0)2026-05-20: Conversion, 397,744 sh2026-05-20: Conversion, 397,744 sh2026-02-20: Sale, 124,338 sh ($16.5M)2026-02-20: Sale, 110,800 sh ($14.9M)2026-02-20: Sale, 104,796 sh ($14.0M)2026-02-20: Sale, 39,893 sh ($5.3M)2026-02-20: Sale, 35,656 sh ($4.8M)2026-02-20: Sale, 23,198 sh ($3.1M)2026-02-20: Sale, 20,259 sh ($2.7M)2026-02-20: Sale, 19,309 sh ($2.6M)2026-02-20: Sale, 8,596 sh ($1.2M)2026-02-20: Sale, 6,180 sh ($816K)2026-02-20: Option exercise, 877,500 sh ($0)2026-02-20: Option exercise, 97,500 sh ($0)2026-02-20: Option exercise, 877,500 sh ($0)2026-02-20: Conversion, 90,000 sh ($0)2026-02-20: Conversion, 403,025 sh ($0)2026-02-20: Option exercise, 97,500 sh ($0)2026-02-20: Conversion, 90,000 sh2026-02-20: Conversion, 403,025 sh2026-02-20: Conversion, 90,000 sh2026-02-20: Conversion, 403,025 sh2025-11-21: Sale, 44,593 sh ($7.0M)2025-11-21: Sale, 545 sh ($86K)2025-11-21: Sale, 426 sh ($65K)2025-11-21: Conversion, 45,564 sh ($0)2025-11-21: Conversion, 45,564 sh2025-11-21: Conversion, 45,564 sh2025-11-20: Sale, 44,883 sh ($7.8M)2025-11-20: Sale, 44,669 sh ($7.0M)2025-11-20: Sale, 43,582 sh ($6.9M)2025-11-20: Sale, 39,589 sh ($6.8M)2025-11-20: Sale, 33,722 sh ($5.8M)2025-11-20: Sale, 22,200 sh ($3.4M)2025-11-20: Sale, 21,338 sh ($3.3M)2025-11-20: Sale, 20,275 sh ($3.2M)2025-11-20: Sale, 17,365 sh ($2.8M)2025-11-20: Sale, 12,867 sh ($2.1M)2025-11-20: Sale, 10,320 sh ($1.8M)2025-11-20: Sale, 10,387 sh ($1.7M)2025-11-20: Sale, 7,857 sh ($1.3M)2025-11-20: Sale, 6,657 sh ($1.1M)2025-11-20: Sale, 6,228 sh ($1.0M)2025-11-20: Sale, 5,454 sh ($921K)2025-11-20: Sale, 4,819 sh ($800K)2025-11-20: Sale, 4,145 sh ($719K)2025-11-20: Sale, 2,968 sh ($480K)2025-11-20: Conversion, 359,325 sh ($0)2025-11-20: Option exercise, 97,500 sh ($0)2025-11-20: Option exercise, 877,500 sh ($0)2025-11-20: Option exercise, 877,500 sh ($0)2025-11-20: Option exercise, 97,500 sh ($0)2025-11-20: Conversion, 359,325 sh2025-11-20: Conversion, 359,325 sh2025-08-21: Sale, 96,285 sh ($15.0M)2025-08-21: Sale, 78,440 sh ($12.2M)2025-08-21: Sale, 9,614 sh ($1.5M)2025-08-21: Sale, 1,855 sh ($292K)2025-08-21: Conversion, 186,194 sh ($0)2025-08-21: Conversion, 186,194 sh2025-08-21: Conversion, 186,194 sh2025-08-20: Sale, 50,567 sh ($7.8M)2025-08-20: Sale, 30,194 sh ($4.6M)2025-08-20: Sale, 28,379 sh ($4.4M)2025-08-20: Sale, 17,574 sh ($2.6M)2025-08-20: Sale, 16,069 sh ($2.4M)2025-08-20: Sale, 14,439 sh ($2.2M)2025-08-20: Sale, 12,766 sh ($2.0M)2025-08-20: Sale, 12,837 sh ($2.0M)2025-08-20: Sale, 9,527 sh ($1.4M)2025-08-20: Sale, 7,521 sh ($1.1M)2025-08-20: Sale, 6,327 sh ($917K)2025-08-20: Sale, 6,298 sh ($906K)2025-08-20: Sale, 5,761 sh ($853K)2025-08-20: Sale, 4,619 sh ($698K)2025-08-20: Option exercise, 97,500 sh ($0)2025-08-20: Option exercise, 97,500 sh ($0)2025-08-20: Conversion, 222,878 sh ($0)2025-08-20: Option exercise, 877,500 sh ($0)2025-08-20: Option exercise, 877,500 sh ($0)2025-08-20: Conversion, 222,878 sh2025-08-20: Conversion, 222,878 sh2025-05-21: Sale, 18,391 sh ($2.3M)2025-05-21: Sale, 14,394 sh ($1.8M)2025-05-21: Sale, 7,040 sh ($893K)2025-05-21: Conversion, 39,825 sh ($0)2025-05-21: Conversion, 39,825 sh2025-05-21: Conversion, 39,825 sh2025-05-20: Sale, 180,000 sh ($22.7M)2025-05-20: Sale, 129,631 sh ($16.5M)2025-05-20: Sale, 48,387 sh ($6.1M)2025-05-20: Sale, 964 sh ($123K)2025-05-20: Option exercise, 97,500 sh ($0)2025-05-20: Conversion, 358,982 sh ($0)2025-05-20: Option exercise, 97,500 sh ($0)2025-05-20: Option exercise, 877,500 sh ($0)2025-05-20: Option exercise, 877,500 sh ($0)2025-05-20: Conversion, 358,982 sh2025-05-20: Conversion, 358,982 sh2025-02-21: Sale, 23,611 sh ($2.5M)2025-02-21: Sale, 16,792 sh ($1.8M)2025-02-21: Sale, 16,003 sh ($1.7M)2025-02-21: Sale, 11,606 sh ($1.2M)2025-02-21: Sale, 6,663 sh ($721K)2025-02-21: Conversion, 74,675 sh ($0)2025-02-21: Conversion, 74,675 sh2025-02-21: Conversion, 74,675 sh2025-02-20: Sale, 47,876 sh ($5.1M)2025-02-20: Sale, 43,618 sh ($4.5M)2025-02-20: Sale, 41,244 sh ($4.2M)2025-02-20: Sale, 38,243 sh ($4.0M)2025-02-20: Sale, 39,828 sh ($4.0M)2025-02-20: Sale, 39,334 sh ($3.9M)2025-02-20: Sale, 34,893 sh ($3.4M)2025-02-20: Sale, 31,557 sh ($3.3M)2025-02-20: Sale, 30,871 sh ($3.3M)2025-02-20: Sale, 5,332 sh ($519K)2025-02-20: Sale, 4,027 sh ($388K)2025-02-20: Sale, 1,067 sh ($114K)2025-02-20: Conversion, 357,890 sh ($0)2025-02-20: Option exercise, 877,500 sh ($0)2025-02-20: Option exercise, 877,500 sh ($0)2025-02-20: Option exercise, 97,500 sh ($0)2025-02-20: Option exercise, 97,500 sh ($0)2025-02-20: Conversion, 357,890 sh2025-02-20: Conversion, 357,890 sh

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-20PLTRSale306,544 @ $174.85$53.6M−4.5% of holding6,497,191Form 4
2026-08-20PLTRSale63,629 @ $175.42$11.2M−1.0% of holding6,433,562Form 4
2026-08-20PLTRSale62,498 @ $174.73$10.9M−1.0% of holding6,443,958Form 4
2026-08-20PLTRSale19,493 @ $173.79$3.4M−0.3% of holding6,803,735Form 4
2026-08-20PLTRSale11,602 @ $173.84$2.0M−0.2% of holding6,506,456Form 4
2026-08-20PLTRSale11,200 @ $175.48$2.0M−0.2% of holding6,432,758Form 4
2026-08-20PLTRSale11,378 @ $172.65$2.0M−0.2% of holding6,823,228Form 4
2026-08-20PLTRSale4,200 @ $172.66$725K−0.1% of holding6,518,058Form 4
2026-08-20PLTRSale1,304 @ $176.31$230K−0.0% of holding6,432,258Form 4
2026-08-20PLTRSale500 @ $176.30$88K−0.0% of holding6,432,258Form 4
2026-05-20PLTRSale224,009 @ $136.08$30.5M−3.3% of holding6,554,453Form 4
2026-05-20PLTRSale122,195 @ $136.61$16.7M−1.9% of holding6,432,258Form 4
2026-05-20PLTRSale27,595 @ $135.09$3.7M−0.4% of holding6,778,462Form 4
2026-05-20PLTRSale17,310 @ $134.20$2.3M−0.3% of holding6,806,057Form 4
2026-05-20PLTRSale6,635 @ $132.95$882K−0.1% of holding6,823,367Form 4
2026-02-20PLTRSale124,338 @ $132.86$16.5M−1.8% of holding6,671,052Form 4
2026-02-20PLTRSale110,800 @ $134.83$14.9M−1.7% of holding6,455,456Form 4
2026-02-20PLTRSale104,796 @ $133.76$14.0M−1.6% of holding6,566,256Form 4
2026-02-20PLTRSale39,893 @ $132.03$5.3M−0.6% of holding6,795,390Form 4
2026-02-20PLTRSale35,656 @ $134.87$4.8M−0.6% of holding6,440,854Form 4
2026-02-20PLTRSale23,198 @ $135.73$3.1M−0.4% of holding6,432,258Form 4
2026-02-20PLTRSale20,259 @ $132.82$2.7M−0.3% of holding6,495,819Form 4
2026-02-20PLTRSale19,309 @ $133.73$2.6M−0.3% of holding6,476,510Form 4
2026-02-20PLTRSale8,596 @ $135.67$1.2M−0.1% of holding6,432,258Form 4
2026-02-20PLTRSale6,180 @ $132.01$816K−0.1% of holding6,516,078Form 4
2025-11-21PLTRSale44,593 @ $156.26$7.0M−0.7% of holding6,432,803Form 4
2025-11-21PLTRSale545 @ $157.74$86K−0.0% of holding6,432,258Form 4
2025-11-21PLTRSale426 @ $153.43$65K−0.0% of holding6,477,396Form 4
2025-11-20PLTRSale44,883 @ $172.77$7.8M−0.7% of holding6,436,403Form 4
2025-11-20PLTRSale44,669 @ $157.25$7.0M−0.7% of holding6,703,376Form 4
2025-11-20PLTRSale43,582 @ $158.14$6.9M−0.7% of holding6,659,794Form 4
2025-11-20PLTRSale39,589 @ $172.00$6.8M−0.6% of holding6,481,286Form 4
2025-11-20PLTRSale33,722 @ $170.91$5.8M−0.5% of holding6,520,875Form 4
2025-11-20PLTRSale22,200 @ $155.31$3.4M−0.3% of holding6,769,383Form 4
2025-11-20PLTRSale21,338 @ $156.19$3.3M−0.3% of holding6,748,045Form 4
2025-11-20PLTRSale20,275 @ $159.08$3.2M−0.3% of holding6,639,519Form 4
2025-11-20PLTRSale17,365 @ $160.16$2.8M−0.3% of holding6,622,154Form 4
2025-11-20PLTRSale12,867 @ $161.16$2.1M−0.2% of holding6,609,287Form 4
2025-11-20PLTRSale10,320 @ $169.94$1.8M−0.2% of holding6,554,597Form 4
2025-11-20PLTRSale10,387 @ $163.37$1.7M−0.2% of holding6,595,932Form 4
2025-11-20PLTRSale7,857 @ $166.73$1.3M−0.1% of holding6,577,028Form 4
2025-11-20PLTRSale6,657 @ $167.93$1.1M−0.1% of holding6,570,371Form 4
2025-11-20PLTRSale6,228 @ $164.05$1.0M−0.1% of holding6,589,704Form 4
2025-11-20PLTRSale5,454 @ $168.90$921K−0.1% of holding6,564,917Form 4
2025-11-20PLTRSale4,819 @ $165.94$800K−0.1% of holding6,584,885Form 4
2025-11-20PLTRSale4,145 @ $173.41$719K−0.1% of holding6,432,258Form 4
2025-11-20PLTRSale2,968 @ $161.85$480K−0.0% of holding6,606,319Form 4
2025-08-21PLTRSale96,285 @ $155.53$15.0M−1.5% of holding6,512,553Form 4
2025-08-21PLTRSale78,440 @ $156.15$12.2M−1.2% of holding6,434,113Form 4
2025-08-21PLTRSale9,614 @ $154.51$1.5M−0.1% of holding6,608,838Form 4
2025-08-21PLTRSale1,855 @ $157.18$292K−0.0% of holding6,432,258Form 4
2025-08-20PLTRSale50,567 @ $154.16$7.8M−0.8% of holding6,473,403Form 4
2025-08-20PLTRSale30,194 @ $153.12$4.6M−0.5% of holding6,523,970Form 4
2025-08-20PLTRSale28,379 @ $154.89$4.4M−0.4% of holding6,445,024Form 4
2025-08-20PLTRSale17,574 @ $146.05$2.6M−0.3% of holding6,617,416Form 4
2025-08-20PLTRSale16,069 @ $149.93$2.4M−0.2% of holding6,571,620Form 4
2025-08-20PLTRSale14,439 @ $149.04$2.2M−0.2% of holding6,587,689Form 4
2025-08-20PLTRSale12,766 @ $156.11$2.0M−0.2% of holding6,432,258Form 4
2025-08-20PLTRSale12,837 @ $152.05$2.0M−0.2% of holding6,554,164Form 4
2025-08-20PLTRSale9,527 @ $146.93$1.4M−0.1% of holding6,607,889Form 4
2025-08-20PLTRSale7,521 @ $143.12$1.1M−0.1% of holding6,647,615Form 4
2025-08-20PLTRSale6,327 @ $144.87$917K−0.1% of holding6,634,990Form 4
2025-08-20PLTRSale6,298 @ $143.81$906K−0.1% of holding6,641,317Form 4
2025-08-20PLTRSale5,761 @ $148.07$853K−0.1% of holding6,602,128Form 4
2025-08-20PLTRSale4,619 @ $151.05$698K−0.1% of holding6,567,001Form 4
2025-05-21PLTRSale18,391 @ $126.18$2.3M−0.3% of holding6,439,298Form 4
2025-05-21PLTRSale14,394 @ $125.26$1.8M−0.2% of holding6,457,689Form 4
2025-05-21PLTRSale7,040 @ $126.85$893K−0.1% of holding6,432,258Form 4
2025-05-20PLTRSale180,000 @ $126.24$22.7M−2.7% of holding6,562,853Form 4
2025-05-20PLTRSale129,631 @ $126.94$16.5M−2.0% of holding6,433,222Form 4
2025-05-20PLTRSale48,387 @ $125.46$6.1M−0.7% of holding6,742,853Form 4
2025-05-20PLTRSale964 @ $127.71$123K−0.0% of holding6,432,258Form 4
2025-02-21PLTRSale23,611 @ $105.63$2.5M−0.4% of holding6,471,716Form 4
2025-02-21PLTRSale16,792 @ $106.37$1.8M−0.3% of holding6,454,924Form 4
2025-02-21PLTRSale16,003 @ $107.55$1.7M−0.2% of holding6,438,921Form 4
2025-02-21PLTRSale11,606 @ $104.70$1.2M−0.2% of holding6,495,327Form 4
2025-02-21PLTRSale6,663 @ $108.28$721K−0.1% of holding6,432,258Form 4
2025-02-20PLTRSale47,876 @ $106.34$5.1M−0.7% of holding6,433,325Form 4
2025-02-20PLTRSale43,618 @ $102.47$4.5M−0.7% of holding6,581,872Form 4
2025-02-20PLTRSale41,244 @ $101.36$4.2M−0.6% of holding6,625,490Form 4
79 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-20PLTRConversion402,34852,582,901Form 4
2026-08-20PLTRConversion90,00052,492,901Form 4
2026-08-20PLTROption exercise97,50052,985,249Form 4
2026-08-20PLTROption exercise97,5001,852,500Form 4
2026-08-20PLTROption exercise877,50052,887,749Form 4
2026-08-20PLTROption exercise877,50016,672,500Form 4
2026-08-20PLTRConversion402,3486,834,606Form 4
2026-08-20PLTRConversion402,3486,834,606Form 4
2026-08-20PLTRConversion90,0006,522,258Form 4
2026-08-20PLTRConversion402,3486,834,606Form 4
2026-08-20PLTRConversion90,0006,522,258Form 4
2026-08-20PLTRConversion402,3486,834,606Form 4
2026-08-20PLTRConversion90,0006,522,258Form 4
2026-08-20PLTRConversion402,3486,834,606Form 4
2026-08-20PLTRConversion90,0006,522,258Form 4
2026-08-20PLTRConversion402,3486,834,606Form 4
2026-08-20PLTRConversion90,0006,522,258Form 4
2026-08-20PLTRConversion90,0006,522,258Form 4
2026-08-20PLTRConversion402,3486,834,606Form 4
2026-08-20PLTRConversion90,0006,522,258Form 4
2026-08-20PLTRConversion402,3486,834,606Form 4
2026-08-20PLTRConversion90,0006,522,258Form 4
2026-05-20PLTROption exercise877,50017,550,000Form 4
2026-05-20PLTROption exercise97,50052,407,993Form 4
2026-05-20PLTRConversion397,74452,010,249Form 4
2026-05-20PLTROption exercise877,50052,310,493Form 4
2026-05-20PLTROption exercise97,5001,950,000Form 4
2026-05-20PLTRConversion397,7446,830,002Form 4
2026-05-20PLTRConversion397,7446,830,002Form 4
2026-02-20PLTROption exercise877,50051,828,518Form 4
2026-02-20PLTROption exercise97,5002,047,500Form 4
2026-02-20PLTROption exercise877,50018,427,500Form 4
2026-02-20PLTRConversion90,00051,432,993Form 4
2026-02-20PLTRConversion403,02551,522,993Form 4
2026-02-20PLTROption exercise97,50051,926,018Form 4
2026-02-20PLTRConversion90,0006,522,258Form 4
2026-02-20PLTRConversion403,0256,835,283Form 4
2026-02-20PLTRConversion90,0006,522,258Form 4
2026-02-20PLTRConversion403,0256,835,283Form 4
2025-11-21PLTRConversion45,56450,951,018Form 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.