Question 1

When is the next IOSP ex-dividend date?

Accepted Answer

The next IOSP ex-dividend date on record is May 19, 2026. To receive the dividend you must own IOSP shares before this date.

Question 2

What is an ex-dividend date?

Accepted Answer

The ex-dividend date is the cut-off for owning a stock in time to receive its next dividend. If you buy IOSP on or after the ex-dividend date, the seller — not you — receives the upcoming payment. Buy before it and you're entitled to the dividend.

Question 3

Do I have to own IOSP on the ex-dividend date to get the dividend?

Accepted Answer

You must own IOSP before the ex-dividend date — i.e. buy at least one trading day earlier. Since the move to T+1 settlement, the record date and ex-dividend date now fall on the same day, so the ex-date is the deadline that matters.

Question 4

How much is the IOSP dividend?

Accepted Answer

IOSP's most recent dividend was $0.9200 per share, paid on a semiannual basis — about $1.79 per share annually, a forward yield of roughly 2.22%.

Ex-Dividend Date	Pay Date	Amount	Type
May 19, 2026	—	$0.9200	regular
Nov 18, 2025	—	$0.8700	regular
May 20, 2025	—	$0.8400	regular
Nov 18, 2024	—	$0.7900	regular
May 17, 2024	—	$0.7600	regular
Nov 17, 2023	—	$0.7200	regular
May 19, 2023	—	$0.6900	regular
Nov 18, 2022	—	$0.6500	regular
May 16, 2022	—	$0.6300	regular
Nov 15, 2021	—	$0.5900	regular
May 14, 2021	—	$0.5700	regular
Nov 16, 2020	—	$0.5200	regular

IOSP Ex-Dividend Date

IOSP Ex-Dividend Date History

IOSP Ex-Dividend Date — FAQ