I found this article on Apple stockholders at the time of the IPO:
https://www.quora.com/How-much-equi...O-Did-he-really-have-double-the-equity-of-Woz
Of some interest, the single individual largest stockholder was Steve Jobs. Markkula was second and Wozniak was third. But the largest block by far was "all officers and directors."
That's right: By the time of Apple's IPO, Mr. Jobs held the most shares followed by Mr. Markkula and then Mr. Wozniak. That officers and directors block that you refer to included the shares held by those three as well as Mike Scott and some of the other individuals listed. The unlisted officers and directors actually held, in the aggregate, less shares than those listed.
Early on Mr. Jobs, Mr. Wozniak, and Mr. Markkula each owned 260,000 shares. Mr. Scott and Fred Holt were also able to buy in, for 40,000 and 25,000 shares respectively, at (or very near) that early valuation of 35 cents per share. But by the time of the IPO those shares had been diluted such that, collectively, they represented only a little more than 50% ownership of the company. They were diluted by additional equity fundraising and, notably, a significant amount of both exercised stock options and outstanding stock options.
Mr. Scott and Mr. Holt had added to their ownership share of the company by the time of the IPO by buying more shares and, in Mr. Holt's case, exercising options. (Mr. Scott also got rid of a small portion of his shares before the IPO, not sure about Mr. Holt.) The other three had, to different degrees, reduced their ownership share (beyond the reduction caused by dilution) by selling or giving away shares.
Adjusting for pre-IPO splits, each of those three started with 8.32 million shares. By the time of the IPO Mr. Jobs and Mr. Markkula still held the great majority of theirs - 7.5 million and 7.0 million respectively. Mr. Wozniak held just shy of 4 million shares. His wife, whom he was separated from, held another 1.2 million.
At the close of Apple's first day of trading, Mr. Jobs' shares were worth more than $200 million. Today they would be worth more than $60 billion.