Howard Justyn Russell

Director · Officer · Ten-percent owner · SPT

As of 2026-09-16, Howard Justyn Russell has 83 Form 4 transactions on record across 1 company — 41 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 September in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $2.7MIndirect: $14.9M$17.6Mas of 2026-09-16
  • Direct $2.7M
  • Indirect $14.9M
SPTindirect1,321,190 sh$14.9M
SPTdirect239,840 sh$2.7M

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

SPT · 83 trades
2026-09-11: Sale, 40,000 sh ($431K)2026-09-11: Conversion, 40,000 sh ($0)2026-09-11: Conversion, 40,000 sh ($0)2026-09-02: Sale, 10,895 sh ($125K)2026-08-11: Sale, 40,000 sh ($405K)2026-08-11: Conversion, 40,000 sh ($0)2026-08-11: Conversion, 40,000 sh ($0)2026-07-10: Sale, 40,000 sh ($331K)2026-07-10: Conversion, 40,000 sh ($0)2026-07-10: Conversion, 40,000 sh ($0)2026-06-11: Sale, 40,000 sh ($280K)2026-06-11: Conversion, 40,000 sh ($0)2026-06-11: Conversion, 40,000 sh ($0)2026-06-02: Sale, 11,641 sh ($90K)2026-05-11: Sale, 39,960 sh ($263K)2026-05-11: Sale, 40 sh ($296)2026-05-11: Conversion, 40,000 sh ($0)2026-05-11: Conversion, 40,000 sh ($0)2026-04-10: Sale, 40,000 sh ($201K)2026-04-10: Conversion, 40,000 sh ($0)2026-04-10: Conversion, 40,000 sh ($0)2026-03-11: Sale, 40,000 sh ($238K)2026-03-11: Conversion, 40,000 sh ($0)2026-03-11: Conversion, 40,000 sh ($0)2026-03-03: Sale, 23,855 sh ($161K)2026-02-11: Sale, 40,000 sh ($295K)2026-02-11: Conversion, 40,000 sh ($0)2026-02-11: Conversion, 40,000 sh ($0)2026-01-09: Sale, 40,000 sh ($428K)2026-01-09: Conversion, 40,000 sh ($0)2026-01-09: Conversion, 40,000 sh ($0)2025-12-11: Sale, 40,000 sh ($445K)2025-12-11: Conversion, 40,000 sh ($0)2025-12-11: Conversion, 40,000 sh ($0)2025-12-04: Sale, 10,291 sh ($105K)2025-11-04: Sale, 20,000 sh ($204K)2025-11-04: Conversion, 20,000 sh ($0)2025-11-04: Conversion, 20,000 sh ($0)2025-10-07: Sale, 20,000 sh ($236K)2025-10-07: Conversion, 20,000 sh ($0)2025-10-07: Conversion, 20,000 sh ($0)2025-09-05: Sale, 20,000 sh ($299K)2025-09-05: Conversion, 20,000 sh ($0)2025-09-05: Conversion, 20,000 sh ($0)2025-09-03: Sale, 10,566 sh ($160K)2025-08-05: Sale, 20,000 sh ($328K)2025-08-05: Conversion, 20,000 sh ($0)2025-08-05: Conversion, 20,000 sh ($0)2025-07-08: Sale, 40,000 sh ($845K)2025-07-08: Conversion, 40,000 sh ($0)2025-07-08: Conversion, 40,000 sh ($0)2025-06-03: Sale, 26,392 sh ($575K)2025-06-03: Sale, 13,608 sh ($291K)2025-06-03: Sale, 10,575 sh ($228K)2025-06-03: Conversion, 40,000 sh ($0)2025-06-03: Conversion, 40,000 sh ($0)2025-05-06: Sale, 40,000 sh ($833K)2025-05-06: Conversion, 40,000 sh ($0)2025-05-06: Conversion, 40,000 sh ($0)2025-04-04: Sale, 40,000 sh ($800K)2025-04-04: Conversion, 40,000 sh ($0)2025-04-04: Conversion, 40,000 sh ($0)2025-03-13: Award / grant, 109,489 sh ($0)2025-03-04: Sale, 37,035 sh ($973K)2025-03-04: Sale, 24,496 sh ($645K)2025-03-04: Sale, 2,965 sh ($80K)2025-03-04: Conversion, 40,000 sh ($0)2025-03-04: Conversion, 40,000 sh ($0)2025-02-06: Sale, 33,018 sh ($1.1M)2025-02-06: Sale, 6,982 sh ($231K)2025-02-06: Conversion, 20,281 sh ($0)2025-02-06: Conversion, 20,281 sh ($0)2025-01-15: Sale, 40,000 sh ($1.3M)2025-01-15: Conversion, 20,000 sh ($0)2025-01-15: Conversion, 20,000 sh ($0)2024-12-13: Gift, 39,719 sh ($0)2024-12-13: Gift, 39,719 sh ($0)2024-12-12: Sale, 31,719 sh ($1.1M)2024-12-12: Sale, 8,281 sh ($290K)2024-12-12: Gift, 20,000 sh ($0)2024-12-12: Conversion, 20,000 sh ($0)2024-12-12: Conversion, 20,000 sh ($0)2024-12-12: Gift, 20,000 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-09-11SPTSale40,000 @ $10.77$431K−84.4% of holding7,417Form 4
2026-09-02SPTSale10,895 @ $11.45$125K−4.3% of holding239,840Form 4
2026-08-11SPTSale40,000 @ $10.12$405K−84.4% of holding7,417Form 4
2026-07-10SPTSale40,000 @ $8.28$331K−84.4% of holding7,417Form 4
2026-06-11SPTSale40,000 @ $6.99$280K−84.4% of holding7,417Form 4
2026-06-02SPTSale11,641 @ $7.75$90K−4.4% of holding250,735Form 4
2026-05-11SPTSale39,960 @ $6.58$263K−84.3% of holding7,457Form 4
2026-05-11SPTSale40 @ $7.41$296−0.5% of holding7,417Form 4
2026-04-10SPTSale40,000 @ $5.03$201K−84.4% of holding7,417Form 4
2026-03-11SPTSale40,000 @ $5.96$238K−84.4% of holding7,417Form 4
2026-03-03SPTSale23,855 @ $6.76$161K−8.3% of holding262,376Form 4
2026-02-11SPTSale40,000 @ $7.37$295K−84.4% of holding7,417Form 4
2026-01-09SPTSale40,000 @ $10.70$428K−84.4% of holding7,417Form 4
2025-12-11SPTSale40,000 @ $11.12$445K−84.4% of holding7,417Form 4
2025-12-04SPTSale10,291 @ $10.21$105K−3.5% of holding286,231Form 4
2025-11-04SPTSale20,000 @ $10.22$204K−72.9% of holding7,417Form 4
2025-10-07SPTSale20,000 @ $11.81$236K−72.9% of holding7,417Form 4
2025-09-05SPTSale20,000 @ $14.94$299K−72.9% of holding7,417Form 4
2025-09-03SPTSale10,566 @ $15.16$160K−3.4% of holding296,522Form 4
2025-08-05SPTSale20,000 @ $16.38$328K−72.9% of holding7,417Form 4
2025-07-08SPTSale40,000 @ $21.13$845K−84.4% of holding7,417Form 4
2025-06-03SPTSale26,392 @ $21.80$575K−78.1% of holding7,417Form 4
2025-06-03SPTSale13,608 @ $21.35$291K−28.7% of holding33,809Form 4
2025-06-03SPTSale10,575 @ $21.56$228K−3.3% of holding307,088Form 4
2025-05-06SPTSale40,000 @ $20.81$833K−84.4% of holding7,417Form 4
2025-04-04SPTSale40,000 @ $19.99$800K−84.4% of holding7,417Form 4
2025-03-04SPTSale37,035 @ $26.28$973K−78.1% of holding10,382Form 4
2025-03-04SPTSale24,496 @ $26.32$645K−10.5% of holding208,174Form 4
2025-03-04SPTSale2,965 @ $26.83$80K−28.6% of holding7,417Form 4
2025-02-06SPTSale33,018 @ $32.48$1.1M−69.6% of holding14,399Form 4
2025-02-06SPTSale6,982 @ $33.09$231K−48.5% of holding7,417Form 4
2025-01-15SPTSale40,000 @ $31.67$1.3M−59.6% of holding27,136Form 4
2024-12-12SPTSale31,719 @ $34.47$1.1M−66.9% of holding15,698Form 4
2024-12-12SPTSale8,281 @ $34.98$290K−52.8% of holding7,417Form 4
49 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-11SPTConversion40,0001,321,190Form 4
2026-09-11SPTConversion40,00047,417Form 4
2026-08-11SPTConversion40,00047,417Form 4
2026-08-11SPTConversion40,0001,361,190Form 4
2026-07-10SPTConversion40,0001,401,190Form 4
2026-07-10SPTConversion40,00047,417Form 4
2026-06-11SPTConversion40,00047,417Form 4
2026-06-11SPTConversion40,0001,441,190Form 4
2026-05-11SPTConversion40,0001,481,190Form 4
2026-05-11SPTConversion40,00047,417Form 4
2026-04-10SPTConversion40,00047,417Form 4
2026-04-10SPTConversion40,0001,521,190Form 4
2026-03-11SPTConversion40,0001,561,190Form 4
2026-03-11SPTConversion40,00047,417Form 4
2026-02-11SPTConversion40,0001,601,190Form 4
2026-02-11SPTConversion40,00047,417Form 4
2026-01-09SPTConversion40,00047,417Form 4
2026-01-09SPTConversion40,0001,641,190Form 4
2025-12-11SPTConversion40,00047,417Form 4
2025-12-11SPTConversion40,0001,681,190Form 4
2025-11-04SPTConversion20,0001,721,190Form 4
2025-11-04SPTConversion20,00027,417Form 4
2025-10-07SPTConversion20,00027,417Form 4
2025-10-07SPTConversion20,0001,741,190Form 4
2025-09-05SPTConversion20,0001,761,190Form 4
2025-09-05SPTConversion20,00027,417Form 4
2025-08-05SPTConversion20,0001,781,190Form 4
2025-08-05SPTConversion20,00027,417Form 4
2025-07-08SPTConversion40,00047,417Form 4
2025-07-08SPTConversion40,0001,801,190Form 4
2025-06-03SPTConversion40,0001,841,190Form 4
2025-06-03SPTConversion40,00047,417Form 4
2025-05-06SPTConversion40,0001,881,190Form 4
2025-05-06SPTConversion40,00047,417Form 4
2025-04-04SPTConversion40,0001,921,190Form 4
2025-04-04SPTConversion40,00047,417Form 4
2025-03-13SPTAward / grant109,489317,663Form 4
2025-03-04SPTConversion40,00047,417Form 4
2025-03-04SPTConversion40,0001,961,190Form 4
2025-02-06SPTConversion20,2812,001,190Form 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.