MCCALLISTER MICHAEL B

Director · T, ZTS

As of 2026-09-16, MCCALLISTER MICHAEL B has 31 Form 4 transactions on record across 2 companies — 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.

Reconstructed holdings

Direct: $0Indirect: $6.1M$6.1Mas of 2026-09-16
  • Direct $0
  • Indirect $6.1M
Tindirect167,329 sh$4.3M
ZTSindirect24,524 sh$1.8M

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

ZTS · 20 trades
2026-06-10: Gift, 1,209 sh ($0)2026-05-11: Purchase, 3,000 sh ($233K)2026-02-19: Other acquisition, 413 sh ($53K)2026-02-19: Option exercise, 1,619 sh2026-02-19: Option exercise, 1,619 sh2026-02-19: Option exercise, 1,619 sh2026-02-19: Option exercise, 1,619 sh2026-02-18: Award / grant, 1,936 sh ($0)2025-05-20: Gift, 1,830 sh ($0)2025-02-19: Award / grant, 1,596 sh ($0)2025-02-08: Other acquisition, 313 sh ($54K)2025-02-08: Option exercise, 1,225 sh2025-02-08: Option exercise, 1,225 sh2025-02-08: Option exercise, 1,225 sh2025-02-08: Option exercise, 1,225 sh2025-02-06: Other acquisition, 316 sh ($55K)2025-02-06: Option exercise, 1,236 sh2025-02-06: Option exercise, 1,236 sh2025-02-06: Option exercise, 1,236 sh2025-02-06: Option exercise, 1,236 sh
T · 11 trades
2026-07-31: Award / grant, 1,974 sh ($46K)2026-05-29: Award / grant, 9,274 sh ($230K)2026-04-30: Award / grant, 1,640 sh ($43K)2026-01-30: Award / grant, 1,618 sh ($42K)2025-10-31: Award / grant, 1,694 sh ($42K)2025-07-31: Award / grant, 1,515 sh ($42K)2025-05-30: Award / grant, 7,914 sh ($220K)2025-04-30: Award / grant, 1,405 sh ($39K)2025-02-10: Gift, 30,566 sh ($0)2025-02-10: Gift, 30,566 sh ($0)2025-01-31: Award / grant, 1,622 sh ($38K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-05-11ZTSPurchase3,000 @ $77.76$233K+13.9% of holding24,524Form 4
30 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-07-31TAward / grant1,974167,329Form 4
2026-06-10ZTSGift1,2090Form 4
2026-05-29TAward / grant9,274165,355Form 4
2026-04-30TAward / grant1,640156,081Form 4
2026-02-19ZTSOther acquisition4131,209Form 4
2026-02-19ZTSOption exercise1,6191,622Form 4
2026-02-19ZTSOption exercise1,6190Form 4
2026-02-19ZTSOption exercise1,6191,622Form 4
2026-02-19ZTSOption exercise1,6190Form 4
2026-02-18ZTSAward / grant1,9361,936Form 4
2026-01-30TAward / grant1,618154,441Form 4
2025-10-31TAward / grant1,694152,823Form 4
2025-07-31TAward / grant1,515151,128Form 4
2025-05-30TAward / grant7,914149,613Form 4
2025-05-20ZTSGift1,8303Form 4
2025-04-30TAward / grant1,405141,700Form 4
2025-02-19ZTSAward / grant1,5961,596Form 4
2025-02-10TGift30,56662,076Form 4
2025-02-10TGift30,5660Form 4
2025-02-08ZTSOther acquisition3131,833Form 4
2025-02-08ZTSOption exercise1,2252,146Form 4
2025-02-08ZTSOption exercise1,2250Form 4
2025-02-08ZTSOption exercise1,2252,146Form 4
2025-02-08ZTSOption exercise1,2250Form 4
2025-02-06ZTSOther acquisition316921Form 4
2025-02-06ZTSOption exercise1,2361,237Form 4
2025-02-06ZTSOption exercise1,2361,237Form 4
2025-02-06ZTSOption exercise1,2360Form 4
2025-02-06ZTSOption exercise1,2360Form 4
2025-01-31TAward / grant1,622140,294Form 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.