In this episode of Controllers Classified, Erik Zhou speaks with Jessica Peng, Controller at Invoca, about mastering change management. Jessica shares her experiences transitioning from a Big Four to client side, offering insights into SOX compliance and the nuances of internal controls. She then uses Invoca’s recent revenue recognition system overhaul to highlight best practices and considerations for managing complex change.

When Mark Partin first became CFO at BlackLine nearly a decade ago, the concept of Sales Ops was still rather new within the company, and he was tasked with building it from scratch. Over time, Sales Ops evolved into Revenue Ops, integrating finance, sales, and customer success functions to support BlackLine’s rapid growth. In this discussion, Partin shares critical milestones, including consolidating over 100 systems to achieve a "single source of truth," aligning departments around the customer journey, and leveraging data to drive productivity and efficiency—a transformative journey that enabled sustainable growth.

From day one of his professional life, Derek Warnick knew his career would be driven by a purpose greater than mere career advancement. As an undergraduate studying finance and international business, he contemplated how his professional life could make a meaningful impact. Upon graduation, he joined the World Bank’s International Finance Corporation, focusing on empowering small businesses in developing countries. “I was excited by the opportunity to help people and have an international focus,” he recalls.

However, Warnick soon realized he wanted to do more to address climate change. “I started to become much more interested in learning about how we could avert the worst effects of climate change,” he says. This passion led him to pursue an MBA at MIT Sloan, concentrating on clean energy finance. “I believe in utilizing a financial focus to further technology and business innovation,” Derek explains. “I don’t think that the role of a CFO or a finance department should be an afterthought.”

After his MBA, he joined a commodities trading firm but soon took on the role of CFO at a small power development startup. There, he gained hands-on experience in all aspects of finance and operations. “I had to do absolutely every single thing in a finance organization,” he says. “I enjoy walking that tightrope and being an operator.”

His dedication to sustainable energy culminated in co-founding Electric Hydrogen, where he serves as CFO. “At Electric Hydrogen, we are singularly focused on bringing down the cost of industrial-scale decarbonization,” Derek states. He believes that providing cost-effective, scalable solutions is key to making a real impact on climate change. “I can’t imagine doing something where I worked for a company that made widgets,” he reflects. “For me, there has to be that business purpose so that I’m excited about what I do.”

Throughout his career, Derek has consistently chosen roles that align with his commitment to sustainable energy. “I firmly believe that if you have a job you love, you’ll never work a day in your life,” he says.

One of the key lessons that helped advance Jim Benson down the CFO path was one in clarity and focus during his tenure as FP&A leader for the customer service division of Compaq, freshly acquired by Hewlett-Packard. Eager to influence how the division’s performance was presented, Benson dedicated himself to crafting detailed reports and narratives. However, each time he handed his work to the general manager—a skilled storyteller in his own right—his carefully prepared materials were distilled down to two or three essential points.

At first, Benson, a ten year HP veteran, found the process frustrating. “You work very hard to prepare a set of materials and a narrative,” he recalls, “but he would take my materials and build his own narrative.” Yet over time, Benson began to see the value of simplicity and focus, especially in conveying complex financial information to large audiences. The customer service division was in the spotlight for HP’s earnings, so every quarter required a clear, compelling story that was rooted in financial reality and accessible to diverse audiences.

Through this process, Benson honed his storytelling skills, learning to construct narratives that cut to the core of the message without sacrificing key details. This foundational experience shaped his leadership style, setting a high standard for strategic communication throughout his career. Today, as CFO of Dynatrace, Benson applies these skills to ensure that every financial story aligns with the company’s mission, balancing growth, profitability, and innovation.

Had Martin Nolan studied engineering instead of accounting, his career might never have intersected with icons like Marilyn Monroe, John Lennon, or Michael Jackson. Born and raised in Ireland, Nolan’s journey to becoming CFO of Julien’s Auctions, the world’s leading entertainment auction house, was as unique as it was unpredictable. His path to New York City—and ultimately to Julien’s—was made possible by a Green Card lottery, not an accounting degree.

Upon arriving in New York in the early 1990s, Nolan worked at the front desk of the New York Hilton, immersing himself in American culture. Through determination and networking, he ascended into the finance world, becoming a stockbroker and investment advisor at firms like JP Morgan Chase and Merrill Lynch. Yet, when he met Darren Julien in 2004, everything changed. Julien was running a Johnny Cash auction and, as Nolan explains, “He was a marketing guy who needed a finance guy, so I joined him.”

The following year, Nolan resigned from Merrill Lynch to join Julien’s Auctions as CFO—a decision met with surprise from his Wall Street colleagues, who questioned the risks. But Nolan saw no difference between auction halls and stock exchanges, where buyers and sellers converge. By 2010, he became an equal partner in the business, embracing the risks and rewards of the auction world.

Today, with Julien’s at the forefront of entertainment memorabilia, Nolan’s journey highlights a unique blend of finance acumen, adaptability, and an enduring sense of adventure—a career truly shaped by chance and daring choices.

In this episode of Controllers Classified Erik Zhou explores the role of accounting in scaling businesses as well as public company accounting processes with Eric Van Cleve, Controller at 8x8. The episode begins with a recap of Eric’s career in accounting, detailing his discovery of accounting in college and how he worked his way up the ladder once he landed client side out of college. He notes that he found the most success when he focused on being interested, proactive, curious and capable.

The episode then turns to a discussion on how to think about directing accounting operations at scaling companies. Eric shares how he thinks about team structure to ensure efficiency in the close process as well as his decision making framework for where to automate and where to offshore. In every decision he tries to factor in not just current but also future business needs.

From there, the discussion deep dives into private vs. public company accounting, with Eric providing advice to finance and accounting leaders at pre-IPO companies regarding what to prioritize as they think about SOX readiness. He notes that these companies must be able to confirm that the answers they get to in their data are in fact the right answers. In other words, teams have to be able to prove out their control processes and ensure that reporting obligations can be met. And of course, teams should familiarize themselves with 10Ks and 10Qs.

When it came to the public markets, no one can accuse David Morris and his seasoned C-suite colleagues, Fred Burke and Kendall Forbes, of being impatient. Guardian Pharmacy Services, a company they built from the ground up, recently raised $112 million in an IPO, listing on the NYSE under the symbol “GRDN.” The milestone reflects a culmination of over three decades of ever thoughtful, strategic decision making in a highly specialized market.

For CFO David Morris, the path to the public markets wasn’t about rapid scaling or chasing quick wins. “We knew from the start that success in healthcare is a long game,” he says, underscoring the team’s deliberate approach. CEO Fred Burke, COO Kendall Forbes, and Morris founded Guardian Pharmacy with the understanding that meaningful growth would come through a patient, steady process of building relationships and refining operations. They entered a complex space, providing technology-enabled pharmacy services for long-term care facilities (LTCFs) across the U.S., from assisted living to behavioral health facilities.

Today, Guardian’s 50 pharmacies serve approximately 174,000 residents in 6,700 facilities across 36 states. With more than two-thirds of its revenue coming from assisted living and behavioral health facilities, Guardian has become a trusted partner in the long-term care industry, where patient care and regulatory oversight demand careful attention.

The IPO marks a new chapter for Guardian, yet Morris, Burke, and Forbes remain dedicated to their original mission. As the company grows in the public eye, their focus remains on delivering results through quality service and operational insight, underscoring the patient leadership that has driven Guardian’s success.

Sitting quietly at the back of a crowded GE conference room, a young Sandra Wallach diligently took notes during an executive briefing. As one of the newest inductees into GE's esteemed Financial Management Program (FMP), she was eager to absorb every detail. Unbeknownst to her at the time, this moment marked the beginning of a transformative 17-year journey with General Electric.

"FMP allowed me to figure out what I really like to do, what I gravitate towards, and what I'm not as interested in," she reflects. From aircraft leasing to manufacturing finance, each rotation broadened her expertise and honed her adaptability.

GE's approach to talent development was immersive and expansive. Wallach continues, "I had 10 different roles in nine different physical locations over my time." This constant movement not only built her resilience but also provided her with a holistic understanding of GE's diverse businesses. The culture emphasized being an integral part of the senior leadership team and driving change. "They expected me to be able to speak to the business almost as well as the leader that I was supporting," she notes.

This high standard pushed her to develop skills beyond traditional finance roles. Along the way, Wallach says GE's culture exposed her to the personal attributes that would become increasingly critical as she advanced into leadership positions. "Do you have personal edge? Can you make the tough calls? Do you have personal energy?" she explains. Serving as a Master Black Belt and later as a pricing executive, she stepped outside traditional finance roles, gaining valuable insights that would later prove essential in the C-suite.

Beyond GE, Wallach tells us there were still a few boxes to check before she could step into a CFO role. Positions at Intuit and MiaSole provided her with exposure to Silicon Valley's fast-paced culture and the opportunity to work directly with boards and investors. These experiences, coupled with her GE foundation, ultimately paved the way for her appointments as CFO of Amprius Technologies.