IOSP Dividend History & Yield Analysis
IOSP has 39 recorded dividend payments. Below is the full payout history with ex-dividend dates, pay dates, annual dividend totals and the current trailing and forward yield.
Yield & Payout Metrics
Yields calculated against a market price of $93.83.
Annual Dividend History
- 2026$0.92001 pmt
- 2025$1.712 pmts
- 2024$1.552 pmts
- 2023$1.412 pmts
- 2022$1.282 pmts
- 2021$1.162 pmts
- 2020$1.042 pmts
- 2019$1.022 pmts
- 2018$0.89002 pmts
- 2017$0.77002 pmts
- 2016$0.67002 pmts
- 2015$0.61002 pmts
- 2014$0.55002 pmts
- 2013$0.50001 pmt
- 2012$2.001 pmt
- 2009$0.05001 pmt
- 2008$0.10002 pmts
- 2007$0.09002 pmts
- 2006$0.04001 pmt
- 2005$0.07002 pmts
- 2004$0.06002 pmts
- 2003$0.02501 pmt
- 2002$0.02501 pmt
IOSP Payout History & Ex-Dividend Dates
| Ex-dividend date | Pay date | Amount / share |
|---|---|---|
| 2026-05-01 | 2026-05-19 | $0.9200 |
| 2025-11-01 | 2025-11-18 | $0.8700 |
| 2025-05-01 | 2025-05-20 | $0.8400 |
| 2024-11-01 | 2024-11-18 | $0.7900 |
| 2024-05-01 | 2024-05-17 | $0.7600 |
| 2023-11-01 | 2023-11-17 | $0.7200 |
| 2023-05-01 | 2023-05-19 | $0.6900 |
| 2022-11-01 | 2022-11-18 | $0.6500 |
| 2022-05-01 | 2022-05-16 | $0.6300 |
| 2021-11-01 | 2021-11-15 | $0.5900 |
| 2021-05-01 | 2021-05-14 | $0.5700 |
| 2020-11-01 | 2020-11-16 | $0.5200 |
| 2020-05-01 | 2020-05-15 | $0.5200 |
| 2019-11-01 | 2019-11-18 | $0.5200 |
| 2019-05-01 | 2019-05-20 | $0.5000 |
| 2018-11-01 | 2018-11-16 | $0.4500 |
| 2018-05-01 | 2018-05-18 | $0.4400 |
| 2017-11-01 | 2017-11-15 | $0.3900 |
| 2017-05-01 | 2017-05-18 | $0.3800 |
| 2016-11-01 | 2016-11-10 | $0.3400 |
| 2016-05-01 | 2016-05-12 | $0.3300 |
| 2015-11-01 | 2015-11-12 | $0.3100 |
| 2015-05-01 | 2015-05-14 | $0.3000 |
| 2014-11-01 | 2014-11-13 | $0.2800 |
| 2014-05-01 | 2014-05-15 | $0.2700 |
| 2013-11-01 | 2013-11-14 | $0.5000 |
| 2012-12-01 | 2012-12-12 | $2.00 |
| 2009-03-01 | 2009-03-12 | $0.0500 |
| 2008-08-01 | 2008-08-27 | $0.0500 |
| 2008-03-01 | 2008-03-12 | $0.0500 |
| 2007-08-01 | 2007-08-30 | $0.0450 |
| 2007-03-01 | 2007-03-01 | $0.0450 |
| 2006-08-01 | 2006-08-30 | $0.0400 |
| 2005-08-01 | 2005-08-29 | $0.0350 |
| 2005-02-01 | 2005-02-16 | $0.0350 |
| 2004-08-01 | 2004-08-18 | $0.0300 |
| 2004-02-01 | 2004-02-18 | $0.0300 |
| 2003-05-01 | 2003-05-16 | $0.0250 |
| 2002-08-01 | 2002-08-22 | $0.0250 |
Does IOSP pay dividends?
Yes. IOSP pays on a semi-annual schedule, most recently $0.9200 per share with an ex-dividend date of 2026-05-01. To receive a payout you must own the shares before the ex-dividend date; buying on or after it means the previous holder collects that payment.
How the IOSP yield is calculated
The trailing yield divides the last twelve months of dividends per share ($1.79) by the latest market price. The forward yield annualizes the most recent payment across 2 payments per year, which reacts faster after a dividend raise or cut. A rising yield is only good news when it comes from a growing payout rather than a falling share price — check the annual history above and the IOSP DCF fair value page for the cash flow behind it.