O'Callahan Elizabeth M

Officer · NTAP

As of 2026-09-27, O'Callahan Elizabeth M has 146 Form 4 transactions on record across 1 company — 66 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 2024 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $6.2MIndirect: $0$6.2Mas of 2026-09-27
  • Direct $6.2M
  • Indirect $0
NTAPdirect30,737 sh$6.2M

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

NTAP · 146 trades
2026-09-10: Sale, 1,000 sh ($185K)2026-08-15: Withheld for tax, 1,468 sh ($301K)2026-08-15: Option exercise, 699 sh2026-08-15: Option exercise, 1,004 sh2026-08-15: Option exercise, 2,908 sh2026-08-15: Option exercise, 1,205 sh2026-08-15: Option exercise, 699 sh2026-08-15: Option exercise, 1,004 sh2026-08-15: Option exercise, 2,908 sh2026-08-15: Option exercise, 1,205 sh2026-08-15: Option exercise, 699 sh2026-08-15: Option exercise, 2,908 sh2026-08-15: Option exercise, 1,205 sh2026-08-15: Option exercise, 699 sh2026-08-15: Option exercise, 1,004 sh2026-08-15: Option exercise, 1,004 sh2026-08-15: Option exercise, 1,205 sh2026-08-15: Option exercise, 2,908 sh2026-08-10: Sale, 1,000 sh ($194K)2026-07-10: Sale, 1,000 sh ($171K)2026-07-01: Award / grant, 11,087 sh2026-07-01: Award / grant, 11,087 sh2026-06-10: Sale, 1,000 sh ($163K)2026-05-15: Withheld for tax, 3,822 sh ($458K)2026-05-15: Option exercise, 1,004 sh2026-05-15: Option exercise, 4,821 sh2026-05-15: Option exercise, 700 sh2026-05-15: Option exercise, 1,048 sh2026-05-15: Option exercise, 7,573 sh2026-05-15: Option exercise, 4,821 sh2026-05-15: Option exercise, 1,004 sh2026-05-15: Option exercise, 1,048 sh2026-05-15: Option exercise, 7,573 sh2026-05-15: Option exercise, 700 sh2026-05-14: Withheld for tax, 6,144 sh ($729K)2026-05-14: Withheld for tax, 5,002 sh ($593K)2026-05-14: Award / grant, 12,181 sh2026-05-14: Award / grant, 9,917 sh2026-05-14: Award / grant, 9,917 sh2026-05-14: Award / grant, 12,181 sh2026-05-11: Sale, 1,000 sh ($118K)2026-04-10: Sale, 1,000 sh ($96K)2026-03-10: Sale, 1,000 sh ($101K)2026-02-15: Withheld for tax, 1,443 sh ($142K)2026-02-15: Option exercise, 1,003 sh2026-02-15: Option exercise, 700 sh2026-02-15: Option exercise, 1,047 sh2026-02-15: Option exercise, 2,750 sh2026-02-15: Option exercise, 700 sh2026-02-15: Option exercise, 1,003 sh2026-02-15: Option exercise, 1,047 sh2026-02-15: Option exercise, 2,750 sh2026-02-10: Sale, 1,000 sh ($103K)2026-01-12: Sale, 1,000 sh ($105K)2025-12-10: Sale, 1,000 sh ($117K)2025-11-15: Withheld for tax, 1,373 sh ($150K)2025-11-15: Option exercise, 2,752 sh2025-11-15: Option exercise, 700 sh2025-11-15: Option exercise, 1,004 sh2025-11-15: Option exercise, 1,048 sh2025-11-15: Option exercise, 2,752 sh2025-11-15: Option exercise, 700 sh2025-11-15: Option exercise, 1,004 sh2025-11-15: Option exercise, 1,048 sh2025-11-10: Sale, 1,000 sh ($114K)2025-10-10: Sale, 1,000 sh ($119K)2025-09-10: Sale, 1,000 sh ($124K)2025-08-15: Withheld for tax, 1,373 sh ($149K)2025-08-15: Option exercise, 1,004 sh2025-08-15: Option exercise, 2,750 sh2025-08-15: Option exercise, 1,047 sh2025-08-15: Option exercise, 699 sh2025-08-15: Option exercise, 2,750 sh2025-08-15: Option exercise, 1,047 sh2025-08-15: Option exercise, 1,004 sh2025-08-15: Option exercise, 699 sh2025-08-11: Sale, 1,000 sh ($106K)2025-07-10: Sale, 1,000 sh ($107K)2025-07-01: Award / grant, 19,285 sh2025-07-01: Award / grant, 19,285 sh2025-06-10: Sale, 528 sh ($54K)2025-05-16: Withheld for tax, 5,563 sh ($559K)2025-05-16: Withheld for tax, 4,628 sh ($465K)2025-05-16: Award / grant, 9,260 sh2025-05-16: Award / grant, 11,134 sh2025-05-16: Award / grant, 9,260 sh2025-05-16: Award / grant, 11,134 sh2025-05-15: Withheld for tax, 3,318 sh ($331K)2025-05-15: Option exercise, 6,643 sh2025-05-15: Option exercise, 2,798 sh2025-05-15: Option exercise, 1,003 sh2025-05-15: Option exercise, 1,048 sh2025-05-15: Option exercise, 1,794 sh2025-05-15: Option exercise, 6,643 sh2025-05-15: Option exercise, 2,798 sh2025-05-15: Option exercise, 1,003 sh2025-05-15: Option exercise, 1,048 sh2025-05-15: Option exercise, 1,794 sh2025-05-12: Sale, 452 sh ($44K)2025-04-10: Sale, 451 sh ($37K)2025-03-10: Sale, 528 sh ($49K)2025-02-15: Withheld for tax, 1,970 sh ($235K)2025-02-15: Option exercise, 1,004 sh2025-02-15: Option exercise, 1,047 sh2025-02-15: Option exercise, 1,794 sh2025-02-15: Option exercise, 3,845 sh2025-02-15: Option exercise, 1,004 sh2025-02-15: Option exercise, 1,047 sh2025-02-15: Option exercise, 1,794 sh2025-02-15: Option exercise, 3,845 sh2025-02-10: Sale, 452 sh ($55K)2025-01-10: Sale, 451 sh ($53K)2024-12-10: Sale, 770 sh ($98K)2024-11-15: Withheld for tax, 1,924 sh ($226K)2024-11-15: Option exercise, 3,845 sh2024-11-15: Option exercise, 1,004 sh2024-11-15: Option exercise, 1,004 sh2024-11-15: Option exercise, 1,047 sh2024-11-15: Option exercise, 1,794 sh2024-11-15: Option exercise, 3,845 sh2024-11-15: Option exercise, 1,047 sh2024-11-15: Option exercise, 1,794 sh2024-11-11: Sale, 503 sh ($62K)2024-10-10: Sale, 705 sh ($89K)2024-09-10: Sale, 704 sh ($81K)2024-08-15: Withheld for tax, 1,923 sh ($253K)2024-08-15: Option exercise, 1,793 sh2024-08-15: Option exercise, 3,844 sh2024-08-15: Option exercise, 1,003 sh2024-08-15: Option exercise, 1,048 sh2024-08-12: Sale, 704 sh ($86K)2024-07-10: Sale, 452 sh ($60K)2024-07-01: Award / grant, 11,195 sh2024-06-10: Sale, 672 sh ($81K)2024-05-15: Withheld for tax, 3,432 sh ($380K)2024-05-15: Option exercise, 6,855 sh2024-05-15: Option exercise, 4,014 sh2024-05-15: Option exercise, 1,047 sh2024-05-15: Option exercise, 1,794 sh2024-05-10: Sale, 871 sh ($95K)2024-04-10: Sale, 871 sh ($90K)2024-03-11: Sale, 871 sh ($90K)2024-02-15: Withheld for tax, 1,484 sh ($130K)2024-02-15: Option exercise, 1,794 sh ($0)2024-02-15: Option exercise, 2,842 sh ($0)2024-02-15: Option exercise, 1,048 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-09-10NTAPSale1,000 @ $184.74$185K−3.2% of holding30,737Form 4
2026-08-10NTAPSale1,000 @ $193.82$194K−3.2% of holding30,297Form 4
2026-07-10NTAPSale1,000 @ $170.92$171K−3.1% of holding31,297Form 4
2026-06-10NTAPSale1,000 @ $163.48$163K−3.0% of holding32,297Form 4
2026-05-11NTAPSale1,000 @ $117.73$118K−5.2% of holding18,382Form 4
2026-04-10NTAPSale1,000 @ $96.25$96K−4.9% of holding19,382Form 4
2026-03-10NTAPSale1,000 @ $100.67$101K−4.7% of holding20,382Form 4
2026-02-10NTAPSale1,000 @ $103.45$103K−4.7% of holding20,075Form 4
2026-01-12NTAPSale1,000 @ $105.49$105K−4.5% of holding21,075Form 4
2025-12-10NTAPSale1,000 @ $117.37$117K−4.3% of holding22,075Form 4
2025-11-10NTAPSale1,000 @ $114.29$114K−4.4% of holding21,628Form 4
2025-10-10NTAPSale1,000 @ $119.00$119K−4.2% of holding22,628Form 4
2025-09-10NTAPSale1,000 @ $123.67$124K−4.1% of holding23,628Form 4
2025-08-11NTAPSale1,000 @ $105.90$106K−4.1% of holding23,251Form 4
2025-07-10NTAPSale1,000 @ $106.84$107K−4.0% of holding24,251Form 4
2025-06-10NTAPSale528 @ $103.06$54K−2.0% of holding25,251Form 4
2025-05-12NTAPSale452 @ $97.50$44K−3.6% of holding11,997Form 4
2025-04-10NTAPSale451 @ $83.14$37K−3.5% of holding12,449Form 4
2025-03-10NTAPSale528 @ $92.58$49K−3.9% of holding12,900Form 4
2025-02-10NTAPSale452 @ $120.75$55K−3.8% of holding11,553Form 4
2025-01-10NTAPSale451 @ $116.79$53K−3.6% of holding12,005Form 4
2024-12-10NTAPSale770 @ $127.41$98K−5.8% of holding12,456Form 4
2024-11-11NTAPSale503 @ $123.63$62K−4.3% of holding11,191Form 4
2024-10-10NTAPSale705 @ $126.20$89K−5.7% of holding11,694Form 4
2024-09-10NTAPSale704 @ $114.69$81K−5.4% of holding12,399Form 4
2024-08-12NTAPSale704 @ $122.49$86K−5.9% of holding11,182Form 4
2024-07-10NTAPSale452 @ $133.07$60K−3.7% of holding11,886Form 4
2024-06-10NTAPSale672 @ $120.42$81K−5.2% of holding12,338Form 4
2024-05-10NTAPSale871 @ $108.84$95K−9.1% of holding8,730Form 4
2024-04-10NTAPSale871 @ $103.02$90K−8.3% of holding9,601Form 4
2024-03-11NTAPSale871 @ $102.85$90K−7.7% of holding10,472Form 4
115 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-15NTAPWithheld for tax1,46831,737Form 4
2026-08-15NTAPOption exercise6994,899Form 4
2026-08-15NTAPOption exercise1,0043,011Form 4
2026-08-15NTAPOption exercise2,90833,205Form 4
2026-08-15NTAPOption exercise1,20513,259Form 4
2026-08-15NTAPOption exercise6994,899Form 4
2026-08-15NTAPOption exercise1,0043,011Form 4
2026-08-15NTAPOption exercise2,90833,205Form 4
2026-08-15NTAPOption exercise1,20513,259Form 4
2026-08-15NTAPOption exercise6994,899Form 4
2026-08-15NTAPOption exercise2,90833,205Form 4
2026-08-15NTAPOption exercise1,20513,259Form 4
2026-08-15NTAPOption exercise6994,899Form 4
2026-08-15NTAPOption exercise1,0043,011Form 4
2026-08-15NTAPOption exercise1,0043,011Form 4
2026-08-15NTAPOption exercise1,20513,259Form 4
2026-08-15NTAPOption exercise2,90833,205Form 4
2026-07-01NTAPAward / grant11,08711,087Form 4
2026-07-01NTAPAward / grant11,08711,087Form 4
2026-05-15NTAPWithheld for tax3,82233,085Form 4
2026-05-15NTAPOption exercise1,0044,015Form 4
2026-05-15NTAPOption exercise4,82114,464Form 4
2026-05-15NTAPOption exercise7005,598Form 4
2026-05-15NTAPOption exercise1,0480Form 4
2026-05-15NTAPOption exercise7,57336,907Form 4
2026-05-15NTAPOption exercise4,82114,464Form 4
2026-05-15NTAPOption exercise1,0044,015Form 4
2026-05-15NTAPOption exercise1,0480Form 4
2026-05-15NTAPOption exercise7,57336,907Form 4
2026-05-15NTAPOption exercise7005,598Form 4
2026-05-14NTAPWithheld for tax6,14429,334Form 4
2026-05-14NTAPWithheld for tax5,00223,297Form 4
2026-05-14NTAPAward / grant12,18135,478Form 4
2026-05-14NTAPAward / grant9,91728,299Form 4
2026-05-14NTAPAward / grant9,91728,299Form 4
2026-05-14NTAPAward / grant12,18135,478Form 4
2026-02-15NTAPWithheld for tax1,44321,382Form 4
2026-02-15NTAPOption exercise1,0035,019Form 4
2026-02-15NTAPOption exercise7006,298Form 4
2026-02-15NTAPOption exercise1,0471,048Form 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.