Platzer Peter

Director · Officer · SPIR

As of 2026-09-16, Platzer Peter has 44 Form 4 transactions on record across 1 company — 13 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 May in multiple years since 2024 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $16.9MIndirect: $0$16.9Mas of 2026-09-16
  • Direct $16.9M
  • Indirect $0
SPIRdirect1,473,468 sh$16.9M

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

SPIR · 44 trades
2026-08-20: Sale, 5,100 sh ($72K)2026-05-20: Sale, 5,299 sh ($101K)2026-05-20: Sale, 1,885 sh ($36K)2026-04-20: Sale, 1,800 sh ($33K)2026-03-20: Sale, 1,801 sh ($23K)2026-02-20: Sale, 58,428 sh ($498K)2026-02-03: Award / grant, 275,867 sh ($0)2026-01-21: Sale, 1,801 sh ($22K)2025-12-22: Sale, 1,802 sh ($15K)2025-11-21: Sale, 54,793 sh ($416K)2025-11-11: Sale, 117,236 sh ($985K)2025-10-21: Sale, 1,817 sh ($22K)2025-09-22: Sale, 1,811 sh ($19K)2025-08-21: Sale, 54,783 sh ($474K)2025-07-22: Sale, 20,799 sh ($227K)2025-07-21: Sale, 1,801 sh ($22K)2025-07-08: Sale, 130,191 sh ($1.6M)2025-07-08: Option exercise, 130,191 sh ($917K)2025-07-08: Option exercise, 130,191 sh ($0)2025-06-25: Sale, 1,805 sh ($18K)2025-06-24: Sale, 25,907 sh ($257K)2025-06-11: Sale, 7,750 sh ($93K)2025-06-11: Option exercise, 7,750 sh ($55K)2025-06-11: Option exercise, 7,750 sh ($0)2025-06-10: Sale, 9,227 sh ($111K)2025-06-10: Option exercise, 8,444 sh ($59K)2025-06-10: Option exercise, 783 sh ($6K)2025-06-10: Option exercise, 8,444 sh ($0)2025-06-10: Option exercise, 783 sh ($0)2025-05-28: Award / grant, 45,000 sh ($0)2025-05-27: Sale, 23,563 sh ($256K)2025-05-22: Sale, 53,289 sh ($610K)2025-04-15: Sale, 27,293 sh ($253K)2025-03-18: Sale, 27,564 sh ($236K)2025-03-05: Sale, 28,015 sh ($299K)2025-03-05: Sale, 23,276 sh ($261K)2025-03-04: Sale, 78,933 sh ($791K)2025-03-04: Sale, 66,667 sh ($721K)2025-03-04: Option exercise, 29,277 sh ($206K)2025-03-04: Option exercise, 783 sh ($6K)2025-03-04: Option exercise, 29,277 sh ($0)2025-03-04: Option exercise, 783 sh ($0)2025-02-21: Sale, 51,346 sh ($579K)2024-05-20: Sale, 30,546 sh ($267K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-20SPIRSale5,100 @ $14.09$72K−0.3% of holding1,473,468Form 4
2026-05-20SPIRSale5,299 @ $19.08$101K−0.4% of holding1,478,568Form 4
2026-05-20SPIRSale1,885 @ $19.07$36K−0.1% of holding1,483,867Form 4
2026-04-20SPIRSale1,800 @ $18.31$33K−0.1% of holding1,485,752Form 4
2026-03-20SPIRSale1,801 @ $12.86$23K−0.1% of holding1,691,802Form 4
2026-02-20SPIRSale58,428 @ $8.53$498K−3.3% of holding1,693,603Form 4
2026-01-21SPIRSale1,801 @ $12.10$22K−0.1% of holding1,487,552Form 4
2025-12-22SPIRSale1,802 @ $8.24$15K−0.1% of holding1,489,353Form 4
2025-11-21SPIRSale54,793 @ $7.59$416K−3.5% of holding1,491,155Form 4
2025-11-11SPIRSale117,236 @ $8.40$985K−7.4% of holding1,476,164Form 4
2025-10-21SPIRSale1,817 @ $12.02$22K−0.1% of holding1,545,948Form 4
2025-09-22SPIRSale1,811 @ $10.42$19K−0.1% of holding1,547,765Form 4
2025-08-21SPIRSale54,783 @ $8.66$474K−3.4% of holding1,549,576Form 4
2025-07-22SPIRSale20,799 @ $10.92$227K−1.3% of holding1,593,400Form 4
2025-07-21SPIRSale1,801 @ $12.45$22K−0.1% of holding1,604,359Form 4
2025-07-08SPIRSale130,191 @ $12.25$1.6M−7.5% of holding1,614,199Form 4
2025-06-25SPIRSale1,805 @ $9.92$18K−0.1% of holding1,606,160Form 4
2025-06-24SPIRSale25,907 @ $9.91$257K−1.6% of holding1,614,199Form 4
2025-06-11SPIRSale7,750 @ $12.01$93K−0.5% of holding1,640,106Form 4
2025-06-10SPIRSale9,227 @ $12.06$111K−0.6% of holding1,640,106Form 4
2025-05-27SPIRSale23,563 @ $10.87$256K−1.5% of holding1,565,046Form 4
2025-05-22SPIRSale53,289 @ $11.44$610K−3.2% of holding1,607,965Form 4
2025-04-15SPIRSale27,293 @ $9.28$253K−1.7% of holding1,588,609Form 4
2025-03-18SPIRSale27,564 @ $8.57$236K−1.7% of holding1,615,902Form 4
2025-03-05SPIRSale28,015 @ $10.67$299K−1.7% of holding1,666,742Form 4
2025-03-05SPIRSale23,276 @ $11.20$261K−1.4% of holding1,643,466Form 4
2025-03-04SPIRSale78,933 @ $10.02$791K−4.3% of holding1,761,424Form 4
2025-03-04SPIRSale66,667 @ $10.81$721K−3.8% of holding1,694,757Form 4
2025-02-21SPIRSale51,346 @ $11.27$579K−2.7% of holding1,840,357Form 4
2024-05-20SPIRSale30,546 @ $8.74$267K−1.8% of holding1,661,254Form 4
14 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-02-03SPIRAward / grant275,8671,752,031Form 4
2025-07-08SPIROption exercise130,1911,744,390Form 4
2025-07-08SPIROption exercise130,1910Form 4
2025-06-11SPIROption exercise7,7501,647,856Form 4
2025-06-11SPIROption exercise7,750130,191Form 4
2025-06-10SPIROption exercise8,4441,648,550Form 4
2025-06-10SPIROption exercise7831,649,333Form 4
2025-06-10SPIROption exercise8,444137,941Form 4
2025-06-10SPIROption exercise7833,134Form 4
2025-05-28SPIRAward / grant45,0001,610,046Form 4
2025-03-04SPIROption exercise29,2771,639,323Form 4
2025-03-04SPIROption exercise7831,640,106Form 4
2025-03-04SPIROption exercise29,277146,385Form 4
2025-03-04SPIROption exercise7833,917Form 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.