{"id":1306,"date":"2023-04-25T07:19:18","date_gmt":"2023-04-25T06:19:18","guid":{"rendered":"https:\/\/www.calligo.io\/?post_type=team_member&#038;p=1306"},"modified":"2026-01-12T08:31:13","modified_gmt":"2026-01-12T08:31:13","slug":"mark-herridge","status":"publish","type":"team_member","link":"https:\/\/www.calligo.io\/about-us\/leadership\/mark-herridge\/","title":{"rendered":"Mark Herridge"},"content":{"rendered":"<style>.block-content-two-column{padding:3em 0}@media (min-width: 992px){.block-content-two-column{padding:6em 0}}.block-content-two-column .heading{font-size:1.5rem;line-height:2rem;letter-spacing:0.02em;font-weight:400}@media (min-width: 992px){.block-content-two-column .heading{font-size:2.5rem;line-height:3rem}}.block-content-two-column .heading-col>*{max-width:39.75rem}.block-content-two-column .content-col{color:#1e1e1e}@media (min-width: 992px){.block-content-two-column .content-col{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:end;-ms-flex-pack:end;justify-content:flex-end}}.block-content-two-column .content-col>*{max-width:32.875rem}.block-content-two-column .content-col p{letter-spacing:0.05em;margin-bottom:2rem;line-height:1.75rem}.block-content-two-column .content-col p:not(.p--large) .block-content-two-column .content-col p:not(.p--medium) .block-content-two-column .content-col p:not(.p--small) .block-content-two-column .content-col p:not(.p--x-small){font-size:16px}@media only screen and (min-width: 375px){.block-content-two-column .content-col p:not(.p--large) .block-content-two-column .content-col p:not(.p--medium) .block-content-two-column .content-col p:not(.p--small) .block-content-two-column .content-col p:not(.p--x-small){font-size:calc( 16px + 4 * (100vw - 375px) \/ (1346 - 375))}}@media only screen and (min-width: 1346px){.block-content-two-column .content-col p:not(.p--large) .block-content-two-column .content-col p:not(.p--medium) .block-content-two-column .content-col p:not(.p--small) .block-content-two-column .content-col p:not(.p--x-small){font-size:20px}}.block-content-two-column .content-col p:last-child{margin-bottom:0}.block-content-two-column.bg--primary .overline,.block-content-two-column.bg--primary .heading,.block-content-two-column.bg--primary .content-col{color:#fff}\n\n\/*# sourceMappingURL=block-content-two-column.css.map *\/\n<\/style><section id=\"\" class=\"block-content-two-column      \">\n\t<div class=\"container\">\n\t\t<div class=\"row\">\n                        <div class=\"heading-col col-12 col-lg-6\">\n                <div data-aos=\"fade-up\">\n\t\t\t        <h2 class=\"heading\">As Chief Information Security Officer, Mark is responsible for defining and leading Calligo\u2019s information security, cyber risk, and compliance strategy, ensuring the business and its customers are protected against an evolving threat landscape while meeting regulatory and assurance requirements, including ISO and SOC standards.<\/h2>                <\/div>\n            <\/div>\n\t\t\t                <div class=\"content-col col-12 col-lg-6\">\n                    <div data-aos=\"fade-up\">\n                        <p>Mark joined Calligo in August 2013 and is the company\u2019s Chief Information Security Officer. In addition to overseeing security operations and compliance, he plays a key role in shaping Calligo\u2019s wider technology and risk strategy, working closely with executive leadership, customers, and partners to embed security, resilience, and trust into the services Calligo delivers.<\/p>\n<p>With over 25 years\u2019 experience in information technology, Mark has held senior roles across security, operations, and programme delivery. He has led large-scale security and technology transformation initiatives, including infrastructure modernisation, platform consolidation, and the design and implementation of enterprise-grade information security and cyber resilience programmes.<\/p>\n<p>Mark works closely with executive teams and boards to help organisations understand and manage cyber risk in a practical, proportionate way. Through advisory and virtual CISO engagements, he supports customers in aligning security strategy with business objectives, strengthening governance, and making informed decisions that improve resilience without unnecessary complexity or cost.<\/p>\n                    \n                    <\/div>\n                <\/div>\n\t\t\t        <\/div>\n\t<\/div>\n<\/section>\n\n\n<style>.slick-slider{position:relative;display:block;-webkit-box-sizing:border-box;box-sizing:border-box;-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;-ms-touch-action:pan-y;touch-action:pan-y;-webkit-tap-highlight-color:transparent}.slick-list{position:relative;overflow:hidden;display:block;margin:0;padding:0}.slick-list:focus{outline:none}.slick-list.dragging{cursor:pointer;cursor:hand}.slick-slider .slick-track,.slick-slider .slick-list{-webkit-transform:translate3d(0, 0, 0);transform:translate3d(0, 0, 0)}.slick-track{position:relative;left:0;top:0;display:block;margin-left:auto;margin-right:auto}.slick-track:before,.slick-track:after{content:\"\";display:table}.slick-track:after{clear:both}.slick-loading .slick-track{visibility:hidden}.slick-slide{float:left;height:100%;min-height:1px;display:none}[dir=\"rtl\"] .slick-slide{float:right}.slick-slide img{display:block}.slick-slide.slick-loading img{display:none}.slick-slide.dragging img{pointer-events:none}.slick-initialized .slick-slide{display:block}.slick-loading .slick-slide{visibility:hidden}.slick-vertical .slick-slide{display:block;height:auto;border:1px solid transparent}.slick-arrow.slick-hidden{display:none}.block-people-carousel{padding:3em 0}@media (min-width: 992px){.block-people-carousel{padding:6em 0}}.block-people-carousel .heading-row{-webkit-box-align:center;-ms-flex-align:center;align-items:center;margin-bottom:1.25rem}@media (min-width: 992px){.block-people-carousel .heading-row{margin-bottom:2.5rem}}.block-people-carousel .heading{font-size:1.5rem;line-height:2rem;letter-spacing:0.02em;font-weight:400;margin-bottom:0}@media (min-width: 992px){.block-people-carousel .heading{font-size:2.5rem;line-height:3rem}}.block-people-carousel .heading-col{padding-bottom:1.25rem}@media (min-width: 768px){.block-people-carousel .heading-col{padding-bottom:0}}.block-people-carousel .content-col{color:#1e1e1e}@media (min-width: 768px){.block-people-carousel .content-col{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:end;-ms-flex-pack:end;justify-content:flex-end}}.block-people-carousel .content-col .btn{margin-right:0}.block-people-carousel .pc-carousel{display:none;margin-bottom:2rem}.block-people-carousel .pc-carousel.slick-initialized{display:block}.block-people-carousel .pc-slide{margin:0 .625rem 0 .625rem}.block-people-carousel .pc-slide .member-card{margin-bottom:0}.block-people-carousel.bg--primary .overline,.block-people-carousel.bg--primary .heading,.block-people-carousel.bg--primary .content-col{color:#fff}@media (min-width: 768px){.block-people-carousel .slick-list{margin:0 -12px}}.block-people-carousel .slick--arrow-wrap .slides--numbers{display:none}\n\n\/*# sourceMappingURL=block-people-carousel.css.map *\/\n<\/style><section id=\"\" class=\"block-people-carousel      \">\n\t<div class=\"container\">\n\t\t<div class=\"row heading-row\">\n\t\t\t<div class=\"heading-col col-12 col-md-6 col-lg-9\">\n                <div data-aos=\"fade-up\">\n\t\t\t        <h2 class=\"heading\">Meet other members of the team<\/h2>                <\/div>\n            <\/div>\n\t\t\t<div class=\"content-col col-12 col-md-6 col-lg-3\">\n                <div data-aos=\"fade-up\">\n                                    <\/div>\n            <\/div>\n        <\/div>\n        <div class=\"row g-0\">\n                                <div class=\"col-12\">\n                        <div class=\"pc-carousel\" data-aos=\"fade-down\">\n                                                    <div class=\"pc-slide\">\n                                <a href=\"https:\/\/www.calligo.io\/about-us\/leadership\/adam-ryan\/\" class=\"member-card\" data-aos=\"fade-down\">\n    <div class=\"member-card__img-wrapper\">\n        <picture alt=\"\" class=\" behave-as-bg\"><source media=\"(min-width: 0px)\" data-src=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1293\/Adam-Ryan-308x219-c.png\" data-srcset=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1293\/Adam-Ryan-308x219-c.png 1.000x,https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1293\/Adam-Ryan-616x438-c.png 2.000x\"> <img data-src=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1293\/Adam-Ryan-308x219-c.png\" data-srcset=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1293\/Adam-Ryan-308x219-c.png 1.000x,https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1293\/Adam-Ryan-616x438-c.png 2.000x\" alt=\"\" width=\"308\" height=\"219\" class=\"lazyload\"><\/picture>                                \n    <\/div>\n    <div class=\"member-card__content\">\n        <div class=\"member-card__name\">Adam Ryan<\/div>\n                <div class=\"member-card__designation\">Chief Data Officer<\/div>\n                        <div class=\"member-card__location\">\n            <svg width=\"16\" height=\"21\" viewBox=\"0 0 16 21\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                <path d=\"M6.74756 20.3083C7.10063 20.8484 7.92446 20.8484 8.27753 20.3083C14.0051 12.2066 15.0643 11.3578 15.0643 8.34865C15.0643 4.25923 11.6905 0.941406 7.53216 0.941406C3.33455 0.941406 0 4.25923 0 8.34865C0 11.3578 1.01998 12.2066 6.74756 20.3083ZM7.53216 11.435C5.76681 11.435 4.39376 10.0847 4.39376 8.34865C4.39376 6.65115 5.76681 5.2623 7.53216 5.2623C9.25828 5.2623 10.6706 6.65115 10.6706 8.34865C10.6706 10.0847 9.25828 11.435 7.53216 11.435Z\" fill=\"black\"\/>\n            <\/svg>\n            London        <\/div>\n            <\/div>\n<\/a>                            <\/div>\n                                                        <div class=\"pc-slide\">\n                                <a href=\"https:\/\/www.calligo.io\/about-us\/leadership\/chris-herron\/\" class=\"member-card\" data-aos=\"fade-down\">\n    <div class=\"member-card__img-wrapper\">\n        <picture alt=\"\" class=\" behave-as-bg\"><source media=\"(min-width: 0px)\" data-src=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1290\/Chris-Herron-308x219-c.png\" data-srcset=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1290\/Chris-Herron-308x219-c.png 1.000x,https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1290\/Chris-Herron-616x438-c.png 2.000x\"> <img data-src=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1290\/Chris-Herron-308x219-c.png\" data-srcset=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1290\/Chris-Herron-308x219-c.png 1.000x,https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1290\/Chris-Herron-616x438-c.png 2.000x\" alt=\"\" width=\"308\" height=\"219\" class=\"lazyload\"><\/picture>                                \n    <\/div>\n    <div class=\"member-card__content\">\n        <div class=\"member-card__name\">Chris Herron<\/div>\n                <div class=\"member-card__designation\">Director of Data Services<\/div>\n                        <div class=\"member-card__location\">\n            <svg width=\"16\" height=\"21\" viewBox=\"0 0 16 21\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                <path d=\"M6.74756 20.3083C7.10063 20.8484 7.92446 20.8484 8.27753 20.3083C14.0051 12.2066 15.0643 11.3578 15.0643 8.34865C15.0643 4.25923 11.6905 0.941406 7.53216 0.941406C3.33455 0.941406 0 4.25923 0 8.34865C0 11.3578 1.01998 12.2066 6.74756 20.3083ZM7.53216 11.435C5.76681 11.435 4.39376 10.0847 4.39376 8.34865C4.39376 6.65115 5.76681 5.2623 7.53216 5.2623C9.25828 5.2623 10.6706 6.65115 10.6706 8.34865C10.6706 10.0847 9.25828 11.435 7.53216 11.435Z\" fill=\"black\"\/>\n            <\/svg>\n            Bellevue, Washington        <\/div>\n            <\/div>\n<\/a>                            <\/div>\n                                                        <div class=\"pc-slide\">\n                                <a href=\"https:\/\/www.calligo.io\/about-us\/leadership\/donal-duff\/\" class=\"member-card\" data-aos=\"fade-down\">\n    <div class=\"member-card__img-wrapper\">\n        <picture alt=\"\" class=\" behave-as-bg\"><source media=\"(min-width: 0px)\" data-src=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1297\/Donal-Duff-308x219-c.png\" data-srcset=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1297\/Donal-Duff-308x219-c.png 1.000x,https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1297\/Donal-Duff-616x438-c.png 2.000x\"> <img data-src=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1297\/Donal-Duff-308x219-c.png\" data-srcset=\"https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1297\/Donal-Duff-308x219-c.png 1.000x,https:\/\/www.calligo.io\/wp-content\/uploads\/fly-images\/1297\/Donal-Duff-616x438-c.png 2.000x\" alt=\"\" width=\"308\" height=\"219\" class=\"lazyload\"><\/picture>                                \n    <\/div>\n    <div class=\"member-card__content\">\n        <div class=\"member-card__name\">Donal Duff<\/div>\n                <div class=\"member-card__designation\">Chief Finance Officer<\/div>\n                        <div class=\"member-card__location\">\n            <svg width=\"16\" height=\"21\" viewBox=\"0 0 16 21\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n                <path d=\"M6.74756 20.3083C7.10063 20.8484 7.92446 20.8484 8.27753 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class=\"slick-arrow slick-arrow--prev\"><\/button>\n                                <button class=\"slick-arrow slick-arrow--next\"><\/button>\n                            <\/div>\n                            <div class=\"slick--progress\" role=\"progressbar\" aria-valuemin=\"0\" aria-valuemax=\"100\">\n                                <span class=\"slider__label sr-only\"><\/span>\n                            <\/div>\n                        <\/div>\n                    <\/div>\n                        <\/div>\n\t<\/div>\n<\/section>\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":5809,"template":"","member_type":[18],"class_list":["post-1306","team_member","type-team_member","status-publish","has-post-thumbnail","hentry","member_type-executive-leadership"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mark Herridge | Calligo<\/title>\n<meta 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